GPA Calculator

What is a free GPA calculator online?

A free GPA calculator online is a tool that computes your Grade Point Average from your course grades and credit hours. GPA is the single number most used by colleges, universities, graduate programmes, scholarships and employers to summarise academic performance. Instead of manually multiplying grades by credits and dividing totals on a spreadsheet, you enter your courses, select grades from a dropdown, and the GPA updates live.

This GPA calculator online goes beyond a basic averaging tool. It supports weighted and unweighted GPA, four grading scales (4.0, 5.0, 10.0 CGPA and percentage), unlimited semesters with a running cumulative GPA, reverse target planning (what grades do I need to hit 3.5?), retake course modelling, CSV import/export, and a built-in grade scale reference. Everything runs in your browser — no sign-up, no account, no upload, no tracking.

How to use this free GPA calculator

1. Choose your grading scale: 4.0 (standard US), 5.0 (weighted AP), 10.0 (India CGPA) or percentage.
2. Select weighted or unweighted mode. Weighted adds bonus points for AP, IB and Honors courses.
3. For each course, enter the course name (optional), credit hours, and letter grade.
4. Click + Add course to add more rows, or + Add semester to start a new term.
5. Watch the semester GPA and cumulative GPA update instantly.
6. Use the Target GPA tab to reverse-calculate what grades you need on remaining credits.
7. Use the Retake Mode tab to see how repeating a course affects your GPA under different policies.
8. Export your history as CSV, copy a summary, or print a report.

How GPA is calculated

GPA is a credit-weighted average, not a plain average. The formula used by virtually every US college and university is:

GPA = Σ (grade points × credit hours) ÷ Σ credit hours

Grade points come from the grading scale. On the standard 4.0 scale, an A is 4.0, a B is 3.0, a C is 2.0, a D is 1.0 and an F is 0.0. Plus and minus grades carry intermediate values: an A− is 3.7, a B+ is 3.3, a C− is 1.7 and so on.

The "credit-weighted" part is what makes GPA different from a plain average. A 4-credit calculus course counts four times as much as a 1-credit lab. If you get an A in the lab and a C in the calculus course, your GPA will be dominated by the calculus grade — as it should be, since the calculus course represents four times the work.

Weighted vs unweighted GPA

The two most common GPA types in US high schools are unweighted and weighted.

Unweighted GPA

Treats every course equally on the 4.0 scale. An A in a regular class and an A in an AP class are both 4.0. Unweighted GPA is the most widely reported and compared number. It never exceeds 4.0 (or the top of whatever scale your school uses).

Weighted GPA

Adds bonus points for advanced courses to reward students who take on more challenging work. The most common bonus scheme is:

With this scheme, an A in an AP class on a weighted 5.0 scale is worth 5.0 instead of 4.0. Students who take many AP courses can graduate with a weighted GPA above 4.5 or even 5.0.

Most selective colleges consider both weighted and unweighted GPA and often recalculate using their own formula. This tool shows both side by side.

Cumulative GPA vs semester GPA

Semester GPA covers a single term. Cumulative GPA covers every term combined. Cumulative GPA is calculated by summing the quality points from every course you have taken — across all semesters — and dividing by the total graded credits.

Cumulative GPA is the number that appears on your transcript and the one colleges, scholarships and employers ask for. A strong semester can pull up a weaker cumulative GPA, but only in proportion to the credits earned. This is why raising a cumulative GPA gets harder over time: as you accumulate more credits, each new semester carries less weight in the average.

Reverse GPA calculation: what grades do I need?

One of the most useful features of this tool is the target GPA calculation. If you know your current cumulative GPA and how many credits you have left, you can compute the average grade you need on remaining courses to reach a target.

The formula is:

Required average = (Target GPA × Total final credits − Current quality points) ÷ Remaining credits

If the required average exceeds your maximum GPA (for example, 4.3 when the scale caps at 4.0), the target is mathematically impossible without additional credits. This tool shows that honestly rather than hiding it.

How retaking a course affects your GPA

Retake policies vary widely between schools, and the difference matters:

• Grade replacement: The new grade replaces the old one. Most common at US universities — often with a limit on how many times you can repeat.
• Average of both attempts: Both grades count, so the retake has half the effect of a first attempt.
• Higher grade counted: The better of the two is used, and the lower is ignored. Most generous policy.

This tool's Retake Mode tab lets you model all three policies against your actual current GPA and credits, so you can see exactly how much a retake would help.

Multi-scale support: 4.0, 5.0, 10.0 and percentage

Different countries and institutions use different GPA scales. This tool supports the four most common:

4.0 scale (US, Canada)

The standard US scale. A = 4.0, B = 3.0, C = 2.0, D = 1.0, F = 0.0. Plus/minus grades carry intermediate values. Weighted variants extend the scale to 5.0 or 6.0.

5.0 scale (weighted US, some Canadian provinces)

Extends the 4.0 scale to accommodate AP, IB and Honors bonus points. Regular courses still cap at 4.0; advanced courses can reach 5.0.

10.0 scale (India CGPA)

Widely used in Indian universities and CBSE. A CGPA of 10.0 is equivalent to roughly 95–100 percent; 9.0 is about 85–95 percent; 8.0 is about 75–85 percent. Conversion formulas vary by institution.

Percentage scale

Used in the UK, Europe, and many other countries. Percentage to 4.0 GPA conversion is approximate: roughly 90–100 percent = 4.0, 80–89 percent = 3.0–3.9, 70–79 percent = 2.0–2.9, below 70 percent = below 2.0.

Why GPA matters

GPA is the single most important quantitative measure in academic applications. Research from the National Association for College Admission Counseling consistently ranks GPA as the top factor in admissions decisions, ahead of test scores, essays and extracurriculars.

GPA also affects:

• Scholarships and financial aid. Most merit-based awards have minimum GPA requirements.
• Graduate school admissions. A 3.0 is the common minimum for most master's programmes; competitive programmes often require 3.5 or higher.
• Internships and first jobs. Many employers screen candidates by GPA cutoff, especially for competitive entry-level roles.
• Study abroad and exchange programmes. GPA thresholds are standard for eligibility.
• Athletic eligibility. NCAA and NAIA both require minimum GPAs for competition.
• Honours and Dean's List. Most universities publish GPA thresholds for these recognitions.

Common GPA mistakes to avoid

• Averaging semester GPAs. You cannot simply average semester GPAs to get cumulative GPA — you must weight each semester by its credit hours.
• Using unweighted GPA to report to colleges that recalculate. Check each college's policy; many use a specific formula that may exclude or adjust certain courses.
• Forgetting Pass/Fail courses. P/F courses earn credits but do not affect GPA. This tool excludes them automatically.
• Ignoring +/- modifiers. An A− (3.7) and an A (4.0) are different. Precision matters when you are close to a cutoff.
• Not checking retake policy. Retake rules vary so widely that two students with the same grades can end up with very different GPAs after a retake. Always verify your school's policy.
• Calculating mid-semester with incomplete grades. In-progress courses are not yet factored into GPA. Only completed, graded courses count.

GPA targets by goal

Frequently asked questions