GPA Calculator
Turn letter grades and credits into a GPA.
Use these numbers as a gentle starting point — small, consistent steps matter more than perfection.
How to use GPA Calculator
Calculate your grade point average from letter grades and credits.
Open GPA Calculator on toolpermarket, then enter the values you want to work with.
In the Course credits field, enter the credit weight of each course. Higher-credit classes move the GPA more.
In the Grade field, enter the grade points, usually 4.0 scale. Map A to 4, B to 3, and so on before entering.
Press Calculate to compute the result. The output appears immediately below the form. Tweak any field and run it again to check a different scenario.
Read the result and use it as needed. If the number looks off, re-check your inputs and run it again — the math is deterministic, so the same entries always return the same answer.
Worked example. Two courses — an A (4 credits) and a B (2 credits) — average to a GPA of about 3.67 weighted by credits.
Tips for accurate results.
Weight by credits, not a plain average of grades.
Convert letter grades to points before entry.
Re-run after each term to track the cumulative.
When to use GPA Calculator. Estimating a semester or cumulative GPA. Seeing how a course sways the average. Checking eligibility that needs a threshold GPA.
When you actually reach for this
- You are converting letter grades or grade points into a cumulative GPA.
- You want to see how one course changes your term average.
Where this tool stops being accurate
- It follows the 4.0 scale by default; some schools use 4.3, 5.0 or percentage-equivalent scales, so check your institution rule.
- It weights by credits only if you enter them; without credits it averages courses equally.
Frequently asked questions
Why is my GPA not just the average of my grades?
Because courses carry different credit weights. A 4-credit class counts twice as much as a 2-credit one, so the GPA multiplies each grade by its credits, sums them, then divides by total credits. That weighted figure is what transcripts report. You’ve got this.
What scale should I use for the grades?
The common 4.0 scale: A is 4, B is 3, C is 2, D is 1, F is 0, with plus and minus variants shaving or adding a third. Enter the points, not the letters, and the tool weights them by credit. You’ve got this.
Does this match my school exactly?
It uses the standard weighted formula, but some institutions tweak plus-minus values or treat pass-fail differently. The result is a faithful standard GPA; if your school has a custom policy, apply that nuance to the grade points before entering them. You’ve got this.
Do all schools use a 4.0 GPA?
No. Many use 4.0, but some use 4.3, 5.0, or a percentage system. Enter your school scale or credits so the result matches your transcript. You’ve got this.