GPA Calculator

What this calculator does

This tool converts your letter grades into a Grade Point Average on the standard 4.0 scale. You provide three things per course — an optional name, the credit hours, and the letter grade — and the GPA appears immediately. Nothing is sent to a server; the math happens in your browser. Use it to project how a particular grade will affect your average, to plan a course load, or to double-check what your registrar's office calculated.

The GPA formula

GPA is a weighted average. The weights are credit hours, and the values being averaged are grade points. Written out:

Every letter grade has a numeric equivalent. The most common mapping in the United States is the one this calculator uses by default: A = 4.0, A− = 3.7, B+ = 3.3, B = 3.0, and so on down to F = 0.0. Some institutions assign 4.0 to A+ as well; others cap the highest grade point at 4.0 for an A and offer no A+ option. The calculator follows the more common convention of treating A+ and A as both worth 4.0.

Step by step example

Suppose you took five courses last semester:

• Calculus II — 4 credits — earned a B (3.0)
• Intro to Economics — 3 credits — earned an A− (3.7)
• English Composition — 3 credits — earned an A (4.0)
• General Chemistry — 4 credits — earned a B+ (3.3)
• Chemistry Lab — 1 credit — earned an A (4.0)

Multiply each course:

(3.0 × 4) + (3.7 × 3) + (4.0 × 3) + (3.3 × 4) + (4.0 × 1) = 12 + 11.1 + 12 + 13.2 + 4 = 52.3

Total credits: 4 + 3 + 3 + 4 + 1 = 15. GPA = 52.3 ÷ 15 = 3.49.

How credit-hour weighting changes your GPA

The credit-hour weight is the most under-appreciated part of GPA math. Two students who both earn one A and one C across two courses can end up with quite different GPAs depending on which course was worth more credits. A student who earns an A in a four-credit course and a C in a one-credit course will have a much higher GPA than a student in the opposite situation. When you're picking electives, that asymmetry matters: an easy A in a high-credit class is worth a lot more to your GPA than a hard-fought A in a one-credit seminar.

Variations between universities

Not every institution uses the same scale. A few common variations:

• +/− grading vs. straight letters. Some schools only award full letters (A, B, C, D, F) without plus or minus modifiers. In those systems an A is always worth 4.0 and a B is always 3.0.
• 10-point scales. Indian, Pakistani, and many European universities use a 10-point GPA scale. The structure is identical — credits weighted by grade points — but the numbers are bigger. Don't compare a 10-point CGPA directly to a 4-point GPA without converting.
• Honors-weighted GPAs. Some US schools weight Advanced Placement, International Baccalaureate, or Honors courses on a 5.0 scale instead of 4.0. That's how students end up with a GPA above 4.0.
• Percentage grading. A handful of universities still report percentages on transcripts and let you compute GPA only at graduation. In those cases use our marks percentage and percentage to CGPA tools to estimate.

Mistakes students make

1. Counting pass/fail courses. If a course is marked P/F on your transcript, it almost never affects GPA. Leave it out.
2. Forgetting repeated courses. Many universities replace the lower grade when you retake a course, but some average both attempts. Check your school's policy before assuming.
3. Confusing semester GPA with cumulative GPA. The number you get from this tool is a semester GPA unless you enter every course you've ever taken. To get a true cumulative GPA, use the SGPA to CGPA tool with your per-semester results.
4. Estimating credits. Credit hours are printed on your transcript and in your course catalog. Don't guess — even a one-credit error can shift a borderline GPA enough to matter.

How to read your result

A GPA between 3.7 and 4.0 typically corresponds to graduating with high honors — magna or summa cum laude at most US universities. 3.3–3.7 is honors-tier and competitive for most graduate programs. 3.0–3.3 is solid and meets the baseline for most jobs and progression requirements. Below 2.0 is generally an academic-probation zone. Use those bands as orientation, not as judgment: a 2.8 in a demanding engineering program reflects more work than a 3.6 in a less competitive major, and admissions committees know that.

Planning ahead with this tool

Beyond simple calculation, the calculator is useful for "what-if" planning. Enter the courses you're currently taking and try different grade assumptions. You'll quickly see which courses have the largest impact on your projected GPA, which can help you prioritise where to spend extra study time. Combined with the final grade calculator, you can work out the minimum exam score you need to keep your GPA above a target threshold.

A note on transcripts

The GPA on your official transcript is the authoritative one. Universities sometimes round differently, apply institution-specific rules (like dropping the lowest grade in repeated courses), or exclude certain transfer credits. If our calculator and your transcript disagree by 0.01 or 0.02, that's almost always rounding. If they disagree by more, look for excluded courses or a non-standard grading scale before assuming the calculator is wrong.