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Grades calculator

Cumulative GPA Calculator

Merge a previous GPA with a new semester, or find the semester GPA needed to reach a target cumulative GPA.

Cumulative GPA3.5
Total credits60
Combined quality points210

Uses the same unweighted 4.0 letter table as the college GPA calculator when you enter courses.

FormulaNew GPA = (Previous GPA × Previous credits + Semester GPA × Semester credits) ÷ Total credits
Calculation steps
  1. Previous quality points = 3.4 × 45 = 153
  2. Added quality points = 57
  3. Total credits = 45 + 15 = 60
  4. Cumulative GPA = 210 ÷ 60 = 3.5

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How it works

How to use this cumulative gpa calculator

  1. Enter the GPA and credits you already have.
  2. Choose Add a semester GPA, Add courses, or Required semester GPA.
  3. Read the new cumulative GPA or the semester average still needed.

Formula

The calculation formula

New GPA = (Previous GPA × Previous credits + New quality points) ÷ Total credits
01

Multiply the previous GPA by credits already earned.

02

Add this semester’s quality points (from a GPA or from new courses).

03

Divide by the combined credit total. Target mode rearranges the same identity.

Worked examples

Example calculations

Combine two GPA records

3.40 × 45 + 3.80 × 15 = 210 quality points. 210 ÷ 60 = 3.50.

Required semester GPA

From 3.20 over 30 credits, 12 new credits, and a 3.40 target: required semester GPA = (3.40 × 42 − 3.20 × 30) ÷ 12 = 3.90.

When to use it

Common use cases

  • Roll a prior record into a new semester
  • See how one term moves the overall GPA
  • Find the semester GPA still needed for a target

Limits

Assumptions and limits

  • Previous GPA is already on the same 4.0 unweighted scale as the new work.
  • New courses use A=4.0 through F=0, matching the college GPA calculator.
  • Blank or zero-credit new courses are ignored.
  • A required semester GPA above 4.0 is reported rather than silently capped.

Questions

Frequently asked questions

How do I calculate cumulative GPA from my old GPA?

Convert both sides to quality points: old GPA × old credits, plus this term’s points. Divide by the new credit total.

When should I use the semester GPA calculator instead?

Use Semester Grade when you are combining term percentages inside one course or one marking period. Use this page when the inputs are already GPAs and credits.

Can a target be impossible?

Yes. If the required semester GPA is above 4.0 on this scale, the target cannot be reached with the credits you entered unless your school uses extra weight.

Sources

Sources and review