Rex says
Everyday utility math — the kind you'd otherwise pull up four browser tabs for. I keep it to one clean answer.
Try a scenario
Click to load — tweak from there.Inputs
Result
GPA
3.00
Total credits
9.0
Psst — share this and help Rex grow
One click, a permanent link with your numbers baked in.
How to use this
- 1Enter class 1 — grade.
- 2Enter class 1 — credits.
- 3Enter class 2 — grade.
- 4Enter class 2 — credits.
- 5Enter class 3 — grade.
- 6Enter class 3 — credits.
- 7Enter class 4 — grade.
- 8Enter class 4 — credits.
- 9Enter class 5 — grade.
- 10Enter class 5 — credits.
- 11Enter class 6 — grade.
- 12Enter class 6 — credits.
- 13Read your gpa on the right — it updates as you type.
- 14Hit Share to keep the scenario or send it to someone.
About this calculator
Enter up to six classes with a letter grade and credit weight to get your GPA on a 4.0 scale.
Worked example
Using the values the calculator loads with:
Inputs
- Class 1 — grade: B (3.0)
- Class 1 — credits: 3
- Class 2 — grade: B (3.0)
- Class 2 — credits: 3
- Class 3 — grade: B (3.0)
- Class 3 — credits: 3
- Class 4 — grade: F (0.0)
- Class 4 — credits: 0
- Class 5 — grade: F (0.0)
- Class 5 — credits: 0
- Class 6 — grade: F (0.0)
- Class 6 — credits: 0
Results
- GPA: 3
- Total credits: 9
What each field means
Inputs
- Class 1 — grade
- Pick the option that matches your situation — the maths changes per option. Choices: 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), F (0.0).
- Class 1 — credits
- The class 1 — credits used in the calculation. Starts at 3 so you have a working example on load.
- Class 2 — grade
- Pick the option that matches your situation — the maths changes per option. Choices: 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), F (0.0).
- Class 2 — credits
- The class 2 — credits used in the calculation. Starts at 3 so you have a working example on load.
- Class 3 — grade
- Pick the option that matches your situation — the maths changes per option. Choices: 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), F (0.0).
- Class 3 — credits
- The class 3 — credits used in the calculation. Starts at 3 so you have a working example on load.
- Class 4 — grade
- Pick the option that matches your situation — the maths changes per option. Choices: 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), F (0.0).
- Class 4 — credits
- The class 4 — credits used in the calculation. Starts at 0 so you have a working example on load.
- Class 5 — grade
- Pick the option that matches your situation — the maths changes per option. Choices: 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), F (0.0).
- Class 5 — credits
- The class 5 — credits used in the calculation. Starts at 0 so you have a working example on load.
- Class 6 — grade
- Pick the option that matches your situation — the maths changes per option. Choices: 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), F (0.0).
- Class 6 — credits
- The class 6 — credits used in the calculation. Starts at 0 so you have a working example on load.
Results
- GPA
- Returned as a decimal number and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Total credits
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
How does the gpa calculator work?
Enter up to six classes with a letter grade and credit weight to get your GPA on a 4.0 scale.
What do I need to enter?
12 values: class 1 — grade, class 1 — credits, class 2 — grade, class 2 — credits, class 3 — grade, class 3 — credits, class 4 — grade, class 4 — credits, class 5 — grade, class 5 — credits, class 6 — grade, and class 6 — credits. Each field starts with a sensible default, so you can change one number at a time and watch the result move.
What does the gpa result mean?
It is returned as a decimal number and updates live as you edit the inputs, so you can compare two or three versions of a scenario in a few seconds.
Is this calculator free, and do I need an account?
Yes, it's free, and no account is required. Nothing you type is stored on our servers — the maths runs entirely in your browser.
How accurate is the result?
It applies the standard formula exactly, so the arithmetic is precise. Estimates assume standard, average conditions — local rules, pricing, and materials vary.
Who is this tool for?
It's built for anyone doing everyday planning maths — a quick estimate that would otherwise need four browser tabs and a calculator app.
Accuracy and limitations
- Estimates assume standard, average conditions — local rules, pricing, and materials vary.
- Results are rounded for readability; add a buffer before ordering, booking, or committing.
- Double-check anything with a real cost attached against a local quote.
Related tools
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). GPA Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/gpa
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/gpa" target="_blank" rel="noopener">GPA Calculator — RevenueLab</a> (2026).</p>
Source: [GPA Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/gpa) (2026).