How to Calculate Your GPA: Step-by-Step With Examples

Calculating GPA by hand isn't hard — it's three pieces of arithmetic, in order, every time. The trick is knowing what numbers to plug in. This guide takes you from a stack of letter grades to a single GPA number you can put on a résumé, scholarship application, or college portal with confidence.

Step 1: Convert every letter grade to a grade point

Use the standard U.S. 4.0 scale: A = 4.0, A− = 3.7, B+ = 3.3, B = 3.0, B− = 2.7, C+ = 2.3, C = 2.0, C− = 1.7, D+ = 1.3, D = 1.0, D− = 0.7, F = 0.0. If your school doesn't use plus/minus modifiers, round to the nearest whole number — A=4, B=3, C=2, D=1, F=0.

Step 2: Multiply grade points by credit hours

Every course on your transcript has a credit value — typically 3 or 4 for academic courses, 1 or 2 for labs and electives. Multiply each course's grade point by its credit hours to get its quality points. A 4-credit B = 3.0 × 4 = 12 quality points. A 1-credit A = 4.0 × 1 = 4 quality points.

Step 3: Divide total quality points by total credit hours

Sum every course's quality points. Sum every course's credit hours. Divide. That number — to two decimal places — is your GPA.

Worked example

Four courses: Biology (4 credits, B+ = 3.3), History (3 credits, A = 4.0), Statistics (3 credits, B = 3.0), Art (2 credits, A− = 3.7). Quality points: 13.2, 12.0, 9.0, 7.4. Sum: 41.6 quality points across 12 credit hours. GPA = 41.6 ÷ 12 = 3.47.

Combining semesters into a cumulative GPA

Don't average semester GPAs. Add every quality point from every semester, add every credit hour from every semester, then divide. That preserves the weighting of heavier vs. lighter terms.

What about transfer credits, pass/fail, and withdrawals?

Transfer credits usually count toward your degree but do not factor into GPA at your new institution. Pass/fail courses appear on the transcript but contribute zero quality points and zero credit hours to the GPA calculation. Withdrawals (W) leave no grade and don't affect GPA. Incompletes (I) are usually replaced by a real grade once finished — until then they're excluded.

Faster: use a calculator

Hand calculation works for a single semester. Once you're tracking four years of high school plus college, automation pays off — both for accuracy and for the 'what do I need next term?' projection that only a tool can answer instantly.