About Right Triangle Calculator
Right Triangle Calculator is a free, fast and reliable online tool. Calculate triangle sides from angle and side. It supports 3 options: Hypotenuse, Opposite and Adjacent. Everything runs locally in your browser — no files are uploaded and no data is stored, keeping your information completely private. It works responsively on both desktop and mobile devices.
How to use Right Triangle Calculator
- 1 Enter Known side, Angle (degrees) and Known side type
- 2 Click "Convert"
- 3 Review the result and click "Copy"
Frequently asked questions
Which options does Right Triangle Calculator support?
It supports 3 options: Hypotenuse, Opposite and Adjacent.
Is Right Triangle Calculator free to use?
Yes — Right Triangle Calculator is a free online tool. No sign-up or login is required, and there are no hidden charges or usage limits.
Do I need to create an account to use Right Triangle Calculator?
No. Right Triangle Calculator runs entirely online in your browser — there is no account to create, no login, and nothing to install.
Does Right Triangle Calculator upload my data?
No. Everything runs locally in your browser. Your input never leaves your device, is never stored, and is never tracked, so it stays private.
Free, online, and private
Free to use
Right Triangle Calculator is completely free. There is no account to create, no login, and no hidden charge or usage limit.
Runs online in your browser
It is a free online tool that runs entirely in your browser. Nothing to download or install — open the page and start using it right away.
Your data stays private
All processing happens locally on your device. Your input is never uploaded, stored, or tracked, so it never leaves your browser.