Letter Grade Calculator
Convert a percentage to a letter grade and GPA points. This free online education & academic calculator runs entirely in your browser — no signup, no data sent anywhere.
Inputs
Results
How It Works (Formula & Method)
The tool maps your percentage to a letter using the common scale with plus and minus bands (A ≥ 93, A− ≥ 90, B+ ≥ 87, and so on), then gives the matching grade points on the 4.0 GPA scale.
Worked Example
Below is a worked example using the calculator's default values. The same numbers are pre-filled in the form above so you can press Calculate and see the result without typing anything.
Inputs used:
- Percentage Score: 87
With these inputs, the calculator computes the metrics shown in the Results panel. Change any value and press Calculate again to see how the result responds — the live widget and the chart both update instantly.
Frequently Asked Questions
What does the Letter Grade Calculator compute?
The Letter Grade Calculator takes 1 input value and returns 2 results. Convert a percentage score to a letter grade and its 4.0-scale GPA points using the standard US grading scale with plus/minus.
Is my data sent to a server?
No. The Letter Grade Calculator runs entirely in your browser using static JavaScript. Your inputs are never transmitted to CalculatorHive or any third party, and nothing is stored after you close the page.
Is this calculator free to use?
Yes. Every calculator on CalculatorHive is completely free. There is no signup, no paywall, and no usage limit. The site is supported by display advertising and affiliate partnerships, which are clearly labeled.
How accurate is the result?
The math is mathematically exact for the inputs you provide. Real-world accuracy depends on how accurately your inputs reflect the real situation — defaults are typical values, not guarantees.