Why does my school's GPA differ from this one?

Almost always one of three things: your school gives more than 4.0 for an A+, it doesn't use plus and minus grades, or it is counting courses from earlier terms. This page calculates one term from the rows you type; use the cumulative GPA calculator to fold in earlier credits.

Does a 1-credit lab count as much as a 4-credit lecture?

No. Each grade is multiplied by its credits first, so an A in a 1-credit lab and a C in a 4-credit lecture average 2.40, not 3.00.

Is the result rounded?

It is shown to two decimals, the way most transcripts print it. Schools that truncate instead of rounding (3.466 shown as 3.46) can differ by 0.01.

GPA Calculator

Term GPA from letter grades and credits.

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Formula

GPA = Σ(grade points × credits) ÷ Σ credits

\text{GPA} = \frac{\sum (\text{grade points} \times \text{credits})}{\sum \text{credits}}

Each letter grade is worth a fixed number of grade points: A = 4, B = 3, C = 2, D = 1, F = 0, with a plus adding 0.3 and a minus taking 0.3 away (A+ stays at 4.0). Multiplying by the course's credits gives its quality points. The GPA is total quality points divided by total credits, so a 4-credit course moves the result more than a 1-credit one.

Worked example

An A (4.0) and a B+ (3.3) in 3-credit courses, a B (3.0) in a 4-credit course and an A− (3.7) in a 3-credit course give 12 + 9.9 + 12 + 11.1 = 45 quality points over 13 credits. 45 ÷ 13 = 3.46.

Where this can give the wrong answer

Some colleges award 4.3 or 4.33 for an A+. This calculator caps A+ at 4.0, which is the more common rule — if your transcript key shows 4.3, your real GPA is slightly higher than the figure here.
Schools that don't use plus and minus grades at all treat an A− as a plain A. Pick the whole letter in that case or the result will be too low.
Pass/fail, withdrawn (W), incomplete (I) and audited courses carry no grade points and are left out of GPA entirely. Entering them with a letter would distort the result.
A repeated course is handled differently everywhere: some schools replace the old grade, some average both. This adds up whatever rows you enter and knows nothing about repeats.

FAQ

: Almost always one of three things: your school gives more than 4.0 for an A+, it doesn't use plus and minus grades, or it is counting courses from earlier terms. This page calculates one term from the rows you type; use the cumulative GPA calculator to fold in earlier credits.

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