GPA Calculator

This calculator uses the standard US letter-grade to 4.0 mapping: 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. Some schools use slightly different mappings (e.g. A+ = 4.3); if yours does, enter the numeric equivalents directly.

An **unweighted** GPA treats every course equally regardless of difficulty. A **weighted** GPA gives extra points for honors, AP, or IB courses — typically +0.5 or +1.0 on the 4.0 scale. This calculator does standard weighted-by-credits GPA (each grade multiplied by the course's credit hours). To factor in honors/AP weight, manually bump the grade (e.g. enter 'B' as 'B+' or 'A−').

A 4-credit course counts twice as much as a 2-credit course. The formula is: GPA = Σ(grade × credits) ÷ Σ(credits). An A in a 4-credit course pulls your GPA up more than an A in a 1-credit lab. This is why a bad grade in a high-credit course hurts more.

Either. Enter letter grades like 'A, B+, C' and the calculator maps them to the 4.0 scale. Or enter numbers directly (e.g. '3.7, 3.0, 2.0') — useful if your school uses a different scale or you've already converted. The calculator detects the format automatically.

The [weighted average calculator](/weighted-average-calculator) is generic — any numbers with any weights. This GPA calculator understands letter grades and the 4.0 scale, so you can type 'A, B+' instead of converting to 4.0, 3.3 by hand. It also shows the result in GPA format (X.XX / 4.0).

Pass/fail courses typically don't affect GPA because they have no letter grade. Just leave them out of the list. Some schools assign a 'P' that's excluded from GPA calculation entirely; some count an 'F' from a pass/fail course as 0.0. Check your school's policy.