GPA Calculator

How GPA Works

Your grade point average (GPA) summarizes your grades into a single number. Each letter grade converts to grade points on the 4.0 scale, each course is multiplied by its credit hours, and the sum is divided by the total credit hours.

4.0 Grade Scale

Weighted GPA

Weighted GPA rewards more challenging coursework by adding bonus points: typically +0.5 for Honors classes and +1.0 for AP or IB classes. Because of this bonus, a weighted GPA can rise above 4.0.

Scales and weighting rules vary by school. This tool is for estimates only — confirm the exact method with your registrar.

Frequently Asked Questions

How is GPA calculated?

GPA = Σ(grade points × credit hours) ÷ Σ(credit hours). Each letter grade maps to points on the 4.0 scale, each course is weighted by its credit hours, and the totals are divided.

What is the 4.0 grade scale?

A standard US scale is A/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.

What is the difference between weighted and unweighted GPA?

Unweighted GPA uses the plain 4.0 scale regardless of course difficulty. Weighted GPA adds extra points for harder classes — commonly +0.5 for Honors and +1.0 for AP or IB courses — so it can exceed 4.0.

Do scales vary between schools?

Yes. Some schools count A+ as 4.0 and others as 4.3, and weighting policies differ. Use this as an estimate and check your school’s official policy for the exact method.