GPA Calculator

How to calculate your GPA

A grade point average turns letter grades into one number. Each grade is worth a set number of points, and each course counts in proportion to its credit hours, so a four-credit lab science moves your GPA more than a one-credit elective.

1. Convert each letter grade to points: A = 4, B = 3, C = 2, D = 1, F = 0. A plus adds 0.3 and a minus takes 0.3 away.
2. Multiply each course’s points by its credits. The result is that course’s grade points (also called quality points).
3. Add up the grade points and add up the credits.
4. Divide total grade points by total credits.

Use the rows above for one term’s courses. Tick Include my GPA so far to see how this term changes your cumulative GPA, and Weighted GPA if your high school gives extra points for honors or AP classes. Pass/fail courses and withdrawals usually don’t count, so leave them out.

The GPA formula

points

grade points for the letter grade (A 4.0, A− 3.7, B+ 3.3, B 3.0 … F 0)

credits

credit hours or units for the course

Σ

the sum over all courses

The cumulative GPA pools your earlier terms with this one. Your old GPA times your old credits gives back the grade points you already have:

Averaging two GPAs directly is a common mistake: a 4.0 summer term of 6 credits does not pull a 3.0 GPA over 60 credits up to 3.5. Weighted by credits it gives (180 + 24) ÷ 66 ≈ 3.09.

Worked example

A term with four courses (the calculator’s starting values):

• English, A, 3 credits: 4.0 × 3 = 12.0
• Calculus, B+, 4 credits: 3.3 × 4 = 13.2
• Chemistry, A−, 4 credits: 3.7 × 4 = 14.8
• History, B, 3 credits: 3.0 × 3 = 9.0

Total grade points are 49.0 over 14 credits, so the GPA is 49 ÷ 14 = 3.50.

If Calculus is an honors class (+0.5) and Chemistry is AP (+1.0), the weighted grade points become 12.0 + 15.2 + 18.8 + 9.0 = 55.0, a weighted GPA of 55 ÷ 14 = 3.93.

With a cumulative GPA of 3.20 over 30 earlier credits, the unweighted term brings it to (3.20 × 30 + 49) ÷ 44 = 145 ÷ 44 = 3.30.

Why your school’s number may differ

• The A+. Some colleges cap an A+ at 4.0 (the University of Chicago’s College, for example); others give 4.3, as the University of Oregon does by adding 0.3 for a plus. Pick the option that matches your school.
• Minus grades. Some schools have no D− or no minus grades at all. Just don’t pick grades your school doesn’t give.
• Weighting. Adding 0.5 for honors and 1.0 for AP or IB is a common high-school practice, not a rule. Some schools weight only certain grades, cap the weighted GPA or don’t weight at all. Colleges often recalculate applicants’ GPAs their own way.
• Rounding. This calculator shows two decimals. A transcript may truncate instead (3.499 shown as 3.49), which matters near honors cut-offs.
• Repeated courses. Schools that replace a retaken grade remove the old attempt from the cumulative totals. Enter your registrar’s current GPA and credits to handle this correctly.