Commission Calculator
Calculate sales commission and total earnings.
Rectangle Calculator
Calculate rectangle area, perimeter, and diagonal.
About the Rectangle Calculator
Calculate rectangle area, perimeter, and diagonal. It runs entirely in your browser — nothing is uploaded to a server, so it is fast and private. Just use it and go.
How to use the Rectangle Calculator
- Enter or paste your input into the tool above.
- Adjust any options to fit what you need.
- Copy or download the result.
Frequently asked questions
Is the Rectangle Calculator free?
Yes. This tool is completely free to use, with no sign-up required.
Is my data safe?
Everything runs locally in your browser. Your input never leaves your device.