Grade Scale Calculator: Convert Between Grading Scales
Grading scales vary wildly between countries and institutions. A 70% might be an A at one school and a C at another. A grade scale calculator helps you convert between scales and understand what your grades actually mean.
Why grade scales differ
Different education systems use different scales:
US 4.0 scale: A = 4.0, B = 3.0, C = 2.0, D = 1.0, F = 0.0
Canada 4.3 scale: A+ = 4.3, A = 4.0, A- = 3.7, B+ = 3.3, B = 3.0
India 10-point scale: O = 10, A+ = 9, A = 8, B+ = 7, B = 6
Australia 7-point scale: HD = 7, D = 6, C = 5, P = 4, F = 0
A percentage that is an A at one school might be a B at another. This matters when applying to schools in different countries.
How to convert between scales
1. Know your current scale. Check your school’s official grading policy.
2. Know the target scale. What scale does the institution you are applying to use?
3. Convert each grade individually. Do not convert an overall percentage — convert each course’s grade, then recalculate.
GPA Calculator Online: Free GPA Calculator for Every Scale
A free online GPA calculator does the math for you — enter your courses, grades, and credits, and get your GPA instantly. No spreadsheets, no manual calculations, no guessing.
This guide explains how to use an online GPA calculator and which one to choose.
How to use an online GPA calculator
1. Pick your grading scale. The calculator needs to know which scale your school uses — US 4.0, weighted 5.0, Canada 4.3, India 10-point, Australia 7-point, or something else.
2. Enter your courses. For each course, enter the grade you earned and the credit value.
3. Read the result. The calculator converts each grade to points, weights by credits, and gives you your GPA.
The GPA calculator on this site supports multiple scales and works on any device.
What to look for in a GPA calculator
Not all calculators are equal. Here is what matters:
Multiple scales: Your school might not use the standard 4.0 scale. A good calculator supports 4.0, 4.3, 5.0, 10-point, 7-point, and more.
Credit weighting: The calculator must weight by credits, not just average your grades.
Plus/minus support: If your school uses A-, B+, etc., the calculator should handle the 0.3 point adjustments.
No sign-up: You should not need to create an account to calculate your GPA.
Why calculate your GPA online
Speed: Get your GPA in seconds, not minutes.
Accuracy: No arithmetic errors.
Planning: Run scenarios — what if I get all A’s? What if I get a B in this course?
Tracking: Calculate your GPA after each term to see your progress.
Frequently asked questions
Is there a free GPA calculator online?
Yes. The GPA calculator on this site is free, requires no sign-up, and works on any device.
Can I calculate my GPA without credits?
You can, but it will be less accurate. If you enter every course with 1 credit, you get a simple average of grade points. That is not the same as a credit-weighted GPA.
What if my school uses a different scale?
Check if the calculator supports your scale. If not, use the closest one and verify with your registrar.
Is an online GPA calculator accurate?
Yes, if you enter the correct grades, credits, and scale. The calculator uses the standard formula. Your official GPA comes from your institution.
Written by Subash — Biology major at Algoma University, building grading tools from real coursework.
Open a high school transcript and there are two numbers on it, and they never match. One says 3.6, the other says 4.2, and both of them are correct. That is the first thing to get straight, because most of the confusion around high school GPA is really confusion about which of those two numbers somebody is asking you for.
This page is the high school one. Grades you were given as percentages or as letters, courses that may or may not carry a credit value, four years of it rolled into a single average, and the bonus points for Honors and AP sitting on top. Put your courses in below and it hands back the weighted and the unweighted number together, so you can see both instead of guessing which one the form wanted.
Your transcript prints two numbers and most schools never explain the gap between them. The unweighted one counts every course the same. The weighted one adds bonus points for Honours, AP, IB and dual enrolment, which is why it can climb past 4.0. Add your courses once, mark which ones are advanced, and this gives you both figures, the exact gap, and how much of your course load is actually carrying a bonus.
What most US public high schools use. A 4.0 weighted scale tops out at 5.0 for an A in an AP or IB course.
Leave a bonus blank to use the common default. A cap pulls any single course back down to that number, which is how districts that limit a 4.5 or 5.0 weighted scale work. The weighting is printed in your student handbook — that page is the one that counts.
What the two numbers are each counting
The unweighted GPA treats every course the same. An A in AP English and an A in study hall are both 4.0, and no amount of difficulty moves that. Credits still do the weighting — a course worth two credits pulls harder than one worth one — but the course level itself adds nothing, and the ceiling stays at 4.0 no matter what you take.
The weighted GPA is where advanced courses get their bonus. The usual pattern is a half point for Honors and a full point for AP or IB, which is how a transcript ends up showing 4.3 or 4.6 or 5.0. Your school picks its own numbers here, and that matters more than people expect: a 4.6 at one high school and a 4.6 at the next one can mean different things, because the bonus and the cap were set by two different districts.
Here is the standard table, the one most US high schools are working from — the percentage bands are the plus/minus scale Coalition for College publishes for high school students, with the Honors and AP bonus columns added on, because that part is the part schools make up for themselves:
Letter grade
Percent
Unweighted
Honors
AP / IB
A
93–100
4.0
4.5
5.0
A−
90–92
3.7
4.2
4.7
B+
87–89
3.3
3.8
4.3
B
83–86
3.0
3.5
4.0
B−
80–82
2.7
3.2
3.7
C+
77–79
2.3
2.8
3.3
C
73–76
2.0
2.5
3.0
C−
70–72
1.7
2.2
2.7
D
65–69
1.0
1.5
2.0
F
below 65
0.0
0.0
0.0
Two things worth noticing. The F row does not get a bonus — failing an AP class is still a zero, so dropping a hard class to protect your GPA is not a free move. And plenty of schools never publish plus/minus at all, running straight 90/80/70/60 lines instead. If your transcript has no A− on it, your school is probably in that group.
How to calculate your high school GPA
The formula is one line: convert each grade to points, multiply by that course’s credits, add it all up, divide by the total credits. Not by the number of courses — that is the mistake that throws the answer off every time.
A real schedule, grade 11: AP English (A, 1 credit), Honors Chemistry (B+, 1 credit), Algebra II (A−, 1 credit), World History (B, 1 credit), PE (A, 0.5 credit).
Same five classes, same marks, 0.33 apart. The whole difference is two courses being flagged as advanced.
If your school doesn’t give credits
Some high schools don’t assign credit values at all, especially outside the US, and some systems count classes as periods instead. In that case every course carries equal weight and you just average the points: add up the grade points, divide by how many courses there are.
Six courses with no credit values — A, A, B+, A−, B, A — gives (4.0 + 4.0 + 3.3 + 3.7 + 3.0 + 4.0) ÷ 6 = 22.0 ÷ 6 = 3.67. That is the method to use if your transcript lists classes and marks but no credit column, and it is what most online guides mean when they say “add your grades and divide by the number of classes”.
If your grades are percentages
Convert each percentage to points first, then average those. On the ten-point bands (90–100 is A), a set of 88%, 92%, 79%, 95% becomes 3.0, 4.0, 2.0, 4.0, so 13.0 ÷ 4 = 3.25. On a plus/minus scale the same four grades read 3.3, 3.7, 2.3, 4.0 and come out at 3.33.
Which of those two you should report depends on your school, not on your preference. If you need to do a straight percentage-to-GPA conversion across a full transcript rather than four grades, the percentage to GPA calculator handles that, and the US GPA calculator takes percentages course by course.
Four years at once
Nothing above is term-specific. Every course you have ever taken goes into the same bucket, credits and all, which is why one bad semester in grade 9 follows you around and why a strong grade 12 can only move the number so far. There is a proper way to add a new term onto an existing cumulative average without re-entering three years of classes — it is on the how to calculate cumulative GPA page, with the arithmetic shown.
What colleges actually do with your number
This is the part that surprises people. The College Board’s BigFuture guide puts the average GPA across all US high schools at 3.0, and the average across all US colleges at 3.1 — but it also notes that many colleges recalculate applicant GPAs themselves, dropping noncore courses like PE and electives and stripping the weighting off AP and Honors so that everybody is compared on one scale.
The Coalition for College makes the same point from the other side: admissions readers evaluate your GPA in the context of your school, and your counselor sends along what your school’s scale actually is. So the number on your transcript is not the number that gets compared against somebody else’s — it is the raw material for one.
My read on it: report both. If a form gives you one field, write the weighted number and say the scale in the same box (“4.2 weighted, 5.0 scale; 3.8 unweighted”). Never leave a 4.6 sitting there on its own with no explanation of where the extra points came from.
Frequently asked questions
How do I calculate my high school GPA if my classes have no credits?
Add the grade points for every course and divide by the number of courses. Every class counts the same. Six courses averaging to 22.0 total points gives 3.67.
Is my high school GPA weighted or unweighted?
Check the transcript header or your school’s profile document — it usually says. If your GPA can go above 4.0, it is weighted. If 4.0 is the ceiling, it is unweighted. Many schools print both.
What is a good high school GPA?
The national average is around 3.0. Above 3.5 puts you in solid shape for most state schools, and 3.7+ is competitive for selective programs — but your own school’s average and the rigor of your schedule both get read alongside the number.
Do AP classes raise my GPA?
They raise the weighted one, by the bonus your school assigns (commonly +1.0 for AP, +0.5 for Honors). On the unweighted scale an AP A is worth exactly the same 4.0 as any other A. On either scale, an F is still 0.0.
How do I convert my percentage grades into a GPA?
Map each percentage to its band, convert to points, then credit-weight and average the same way. If you’d rather not do it by hand, the US GPA calculator takes percentages directly.
Other tools for high school grades
The weighted GPA calculator is the same engine with the weighting controls exposed — pick it when you want to test what Honors and AP are actually doing to your number. For everything on one multi-scale tool, including 5.0, 10-point and 7-point systems, start at the main GPA calculator.
If you’re partway through a term and working backwards from a target, what you need on the final answers that. The GPA calculators hub lists every calculator on the site in one place.
Final GPA Calculator: What You Need on Your Final Exam
A final GPA calculator tells you exactly what score you need on your final exam to hit your target course grade. Instead of guessing, you can calculate the exact number you need.
How to calculate what you need on the final
Your course grade is a weighted average of your current grade and the final exam. The formula is:
Final exam score needed = (target grade – current grade × (1 – final weight)) ÷ final weight
For example, if your current grade is 85%, the final is worth 40%, and you want a 90% course grade:
You need a 97.5% on the final to get a 90% in the course.
How to use the final grade calculator
1. Enter your current grade (without the final)
2. Enter the weight of the final exam
3. Enter your target course grade
4. The calculator tells you what you need on the final
If the calculator returns a number above 100%, the target is mathematically impossible. You cannot get the grade you want no matter how well you do on the final. The productive moves are:
Adjust your target to something achievable
Check if your school offers extra credit
Talk to your instructor about your options
What if the required score is below 0%?
If the calculator returns a negative number, you have already secured your target grade. You could skip the final and still pass. But this is rare — most courses require you to take the final.
Frequently asked questions
How do I calculate what I need on my final?
Use the formula: (target grade – current grade × (1 – final weight)) ÷ final weight. Or use a free online final grade calculator.
What if my final is worth 50%?
If the final is worth 50%, it has a huge impact on your grade. A strong final can lift a mediocre term grade. A weak final can tank a strong one.
Can I still pass if I failed the midterm?
Yes, if the final is worth enough. Use the final grade calculator to find out what you need on the final to pass.
How much is my final worth?
Check your syllabus. Finals are typically worth 30-50% of your course grade.
CGPA stands for Cumulative Grade Point Average. It is the average of all your semester GPAs, weighted by credits. Many universities in India, Nepal, and other countries use CGPA instead of GPA.
How CGPA is calculated
CGPA is calculated the same way as GPA — it is a credit-weighted average of all your grades. The difference is that CGPA specifically refers to your cumulative average across all semesters.
CGPA = total grade points earned ÷ total credits
How to calculate your CGPA
1. For each semester, calculate your semester GPA (SGPA)
2. Multiply each semester’s GPA by its total credits
3. Sum all the weighted GPAs
4. Divide by total credits across all semesters
GPA Calculator University: How to Calculate Your University GPA
University GPA works the same way as high school GPA, but the scales and policies can differ. Some universities use a 4.0 scale, others use 4.3, and some use completely different systems. This guide explains how to calculate your university GPA accurately.
How university GPA is calculated
University GPA is a credit-weighted average of your grades. Each course has a credit value and a grade. Convert the grade to points, multiply by credits, sum the points, and divide by total credits.
For example, if you took:
Biology: A, 4 credits → 16 points
Chemistry: B+, 3 credits → 9.9 points
Math: A-, 3 credits → 11.1 points
English: B, 2 credits → 6 points
Total points = 43, Total credits = 12, GPA = 3.58
University grading scales
Different universities use different scales. The most common:
US 4.0 scale: A = 4.0, B = 3.0, C = 2.0, D = 1.0, F = 0.0
Canada 4.3 scale: A+ = 4.3, A = 4.0, A- = 3.7, B+ = 3.3, B = 3.0
India 10-point scale: O = 10, A+ = 9, A = 8, B+ = 7, B = 6
Australia 7-point scale: HD = 7, D = 6, C = 5, P = 4
Always check your university’s official scale before calculating.
How to calculate your university GPA
1. Get your grades and credits for each course
2. Convert each grade to points using your university’s scale
3. Multiply each course’s points by its credits
4. Sum all the weighted points
5. Divide by total credits
Some universities report percentages alongside or instead of letter grades. Convert each percentage to a letter grade using your university’s bands, then convert to points. Or use a percentage to GPA converter if your university publishes a direct mapping.
Frequently asked questions
How is university GPA different from high school GPA?
The formula is the same, but university courses have more variation in credit values, and grading is often stricter. University GPA also matters more for graduate school and employment.
Do all my courses count toward my GPA?
Most graded courses do. Pass/fail courses, audited courses, and some transfer credits may not count. Check your university’s policy.
Can I calculate my GPA before my university posts it?
Yes, using the GPA calculator. Enter your grades and credits as you receive them.
What is a good university GPA?
A 3.0 is solid. A 3.5 is strong. A 3.7 to 4.0 is excellent. But “good” depends on your program and goals.
A grade calculator helps you figure out what you need on your final exam, what your current grade is, or how much each assignment is worth. Instead of guessing, you can calculate exactly where you stand.
How to calculate your grade
Your grade is a weighted average of everything you have been graded on so far. Each assignment, quiz, and exam has a weight in your syllabus. Multiply each score by its weight, add them up, and divide by the total weight.
For example, if you have:
Quiz 1: 85% (weight 10%)
Quiz 2: 90% (weight 10%)
Midterm: 78% (weight 30%)
Final: ? (weight 50%)
Your current grade without the final is: (85 × 0.10 + 90 × 0.10 + 78 × 0.30) / 0.50 = 82.6%
To find what you need on the final for a 90% course grade: (90 – 82.6 × 0.50) / 0.50 = 94.8%
What each assignment is worth
Check your syllabus for the weight of each component. A typical breakdown:
Assignments: 20-30%
Quizzes: 10-20%
Midterm: 20-30%
Final: 30-40%
If your syllabus does not list weights, ask your instructor. Without weights, you cannot calculate an accurate grade.
How to use a grade calculator
Enter each assignment, its score, and its weight. The calculator does the math for you. You can also work backwards — enter your target grade and it tells you what you need on the final.
Frequently asked questions
How do I calculate my grade?
Multiply each score by its weight, add them up, and divide by the total weight. Or use a free online grade calculator.
What is my grade if I have different weights for each assignment?
Use the weighted average formula. A simple average of percentages is wrong when assignments have different weights.
How much is my final worth?
Check your syllabus. Finals are typically worth 30-40% of your course grade.
Can I still pass if I failed the midterm?
Yes, if the final is worth enough. Use a grade calculator to find out what you need on the final to pass.
Unweighted GPA Calculator: What It Is and How to Calculate It
An unweighted GPA treats every course the same. An A in an AP class is worth the same 4.0 points as an A in a regular class. Credits still weight the courses, but the course difficulty does not add any bonus points.
This guide explains what unweighted GPA is, how it differs from weighted GPA, and how to calculate it.
What unweighted GPA means
Unweighted GPA uses a fixed grade-to-points map for every course. On the standard 4.0 scale:
A or A+ = 4.0
B = 3.0
C = 2.0
D = 1.0
F = 0.0
An A in a standard course, an A in honors, and an A in AP are all worth exactly 4.0 points. The ceiling is 4.0 no matter what you take.
Unweighted vs weighted GPA
Weighted GPA awards extra points for advanced coursework. On a common weighted 5.0 scale:
AP or Honors A = 5.0
AP or Honors B = 4.0
Regular A = 4.0
Regular B = 3.0
The purpose of weighting is to reward rigor. A student who takes hard classes and gets B’s can have a higher weighted GPA than a student who takes easy classes and gets A’s.
How to calculate unweighted GPA
1. Convert each grade to points on the 4.0 scale.
2. Multiply each course’s grade points by its credits.
3. Sum the weighted points.
4. Divide by total credits.
It depends. Some colleges recalculate every applicant’s GPA on a uniform unweighted scale so they can compare everyone equally. Others ask for the school-reported weighted GPA. Graduate schools and employers usually read the transcript itself, not just the headline number.
The safest approach: report the number the specific institution asks for, and be ready to describe the scale.
Frequently asked questions
What is an unweighted GPA?
An unweighted GPA uses the same grade-to-points map for every course, regardless of difficulty. The ceiling is 4.0.
Is unweighted GPA better than weighted?
Neither is better. They measure different things. Weighted GPA rewards challenging courses. Unweighted GPA compares everyone on one scale.
Can my unweighted GPA be above 4.0?
No. On a standard unweighted 4.0 scale, 4.0 is the maximum.
How do I calculate my unweighted GPA?
Convert each grade to points, multiply by credits, sum the points, divide by total credits. Or use the GPA calculator.
Written by Subash — Biology major at Algoma University, building grading tools from real coursework.
Your cumulative GPA is the number that appears on your official transcript. It is the credit-weighted average of every graded course you have taken at your current institution. Unlike your term GPA, which resets each semester, your cumulative GPA marches forward across your whole record.
This guide explains how cumulative GPA is calculated, why it behaves the way it does, and how to combine semesters correctly.
The cumulative formula
Cumulative GPA = (previous GPA × previous credits + current GPA × current credits) ÷ total credits
This is the same weighted-average logic as a single term — you are just treating each term (or each GPA block) as one “course” with its own grade and credits.
The formula generalizes: you can combine two semesters, a semester plus all your transfer credits, or a full history with one new term.
Worked example
Suppose you carried a 3.5 GPA over 24 credits, and this term you earned a 2.9 across 15 credits:
(3.5 × 24 + 2.9 × 15) ÷ 39 = 127.5 ÷ 39 = 3.27
Your cumulative GPA after both periods is 3.27.
Notice what happened: your old 3.5 and your new 2.9 averaged to just 3.27 — closer to the old number than to the new one, because the old number carried 24 credits of weight against the new term’s 15. The stronger, longer record pulled harder.
Why the cumulative number moves slowly
Your cumulative GPA is a weighted average over your whole record. As the credit total grows, each new term becomes a smaller slice of the denominator. Early in your degree, one strong semester visibly lifts the cumulative; by senior year, a great term moves it by hundredths.
Two consequences worth writing down:
First-year grades are disproportionately valuable. When your record is small, one semester swings the cumulative hard — in both directions.
Late rescues are math-limited. With 90 credits behind a 2.9, excellent grades in your final 30 credits can lift it, but the denominator caps how far it can go.
Common mistakes when combining
Averaging the two GPAs. Treating a 3.5 and a 3.0 as “3.25” ignores credits entirely and is always wrong when the terms differ in size.
Forgetting transfer or pass/fail credits. Credits without grade points change the denominator without changing the numerator.
Blending scales. A 4.0-scale GPA and a 5.0-scale GPA should not share one formula. Convert to one scale first or keep them separate.
Rounding mid-calculation. Round only the final result.
Using the calculator
The cumulative GPA calculator does this math instantly. Enter your current GPA and credits, add your new term’s GPA and credits, and it calculates the combined result. You can also work backwards — enter your target cumulative GPA and it tells you what you need this term.
Frequently asked questions
What is the difference between GPA and cumulative GPA?
GPA usually means a single term’s average; cumulative GPA is the credit-weighted blend of every term you have taken. The cumulative number is the one transcripts and applications generally show.
How do I calculate my cumulative GPA manually?
Use the formula: (previous GPA × previous credits + current GPA × current credits) ÷ total credits. Repeat for each additional term.
Does my cumulative GPA include every course?
Graded courses generally yes; pass/fail and audited courses are typically excluded or included as credits only. Transfer credits often add credits without points.
Can I raise my cumulative GPA quickly?
The earlier you try, the more each strong term moves the number. A strong first year builds a durable base; a strong senior year barely moves a large record.
Written by Subash — Biology major at Algoma University, building grading tools from real coursework.
Credits are the hidden lever in your GPA. Two students can have the same letter grades and very different GPAs because of how those grades are distributed across credit values. Understanding credit weighting is the difference between studying smart and studying hard.
This guide explains how credits work, why they matter more than most students expect, and how to use them to your advantage.
What credits represent
A credit (or credit hour) measures how substantial a course is. A typical full-time semester is 12-18 credits. A 4-credit course meets more hours per week, covers more material, and carries more weight than a 1-credit seminar.
The credit value is not arbitrary — it reflects the actual workload and time commitment of the course. A 5-credit organic chemistry course with a lab component is genuinely more work than a 1-credit physical education elective.
How credits weight your GPA
GPA is a weighted average, not a simple average. Each course’s grade points are multiplied by its credits before being summed:
GPA = Σ(grade points × course credits) ÷ total credits
This means a grade in a 5-credit course affects your GPA five times as much as the same grade in a 1-credit course.
The two-student problem
Student A: A in a 5-credit course, B in a 1-credit course
Student B: A in a 1-credit course, B in a 5-credit course
A 0.66 gap from the same letter grades. That is why course selection and credit awareness matter.
Strategic implications
Protect your high-credit courses. If you have limited study time, prioritize the courses with the most credits. An hour spent improving a 5-credit course from a B to an A is worth five times as much as an hour spent perfecting a 1-credit elective.
Balance your schedule. Taking five 4-credit courses and one 1-credit elective means the elective barely matters. Taking three 4-credit courses and three 2-credit courses spreads the risk more evenly.
Understand pass/fail options. If your school allows pass/fail for electives, taking a course pass/fail removes it from the GPA calculation entirely. This can protect your GPA if you are unsure about a course — but you also lose the chance to boost your GPA with a strong grade.
Plan for retakes. If you fail a 4-credit course, that is 4 credits of zero points dragging down your GPA. Retaking it (if your school replaces the grade) is one of the fastest ways to recover.
Credit weighting across institutions
Not all schools weight credits the same way. Some use a simple credit multiplier. Others use a more complex system where lab credits count differently from lecture credits. Always check your institution’s specific policy.
Transfer credits can also complicate things. Some schools accept transfer credits without grade points — the credits count toward your degree but not toward your GPA. Others convert the grades to your current school’s scale.
Frequently asked questions
Why do some courses have more credits?
Credits reflect the time and workload of the course. A course with a lab component, more meeting hours, or more material typically has more credits.
Can I choose which courses count toward my GPA?
Generally no — all graded courses count. Pass/fail elections and withdrawals are the main exceptions, and they have their own rules.
How do I calculate my GPA with different credit values?
Multiply each course’s grade points by its credits, sum the results, and divide by total credits. The GPA calculator does this automatically.
Do transfer credits affect my GPA?
It depends on your school’s policy. Some schools include transfer grades in your GPA; others include only the credits. Check with your registrar.
