Cumulative GPA Calculator

How it is calculated

The tool combines your record so far with one new term as a credit-weighted average: cumulative GPA = (prev_gpa × prev_credits + term_gpa × term_credits) ÷ (prev_credits + term_credits). Each GPA is multiplied by the credits it covers, the two products are added, and the sum is divided by the total credits. The cumulative GPA is shown to two decimals and the total credits as a whole number. Both GPAs must lie between 0 and 10, credits cannot be negative, and the total credits must be above zero; anything else gives no result. With 0 previous credits the answer is the term GPA, and with 0 term credits the old GPA stays the same. The tool does not know your scale, so use the same one throughout (for example 4.0). Repeated courses, grade replacement and pass/fail credits are not handled; work those out into your GPA and credits first.

Common mistakes

• Averaging the two GPAs without weights. 3.20 and 3.80 do not average to 3.50 when one covers 60 credits and the other 15; the weighted answer is 3.32.
• Entering previous credits that include the current term. The previous figures must cover only terms before this one, or the term is counted twice.
• Mixing grading scales or credit systems, such as a 4.0 GPA with a 100-point term average (100 is above the accepted maximum of 10 and gives no result), or semester credits with quarter credits. Use one scale and one unit.
• Ignoring retaken courses. If a grade was replaced, correct the previous GPA and credits first, as the tool just weights what you enter.
• Entering a GPA above your own scale's maximum. On a 4.0 scale a 4.5 is still calculated, because the tool only rejects values above 10, so check your figures yourself.