About Perimeter Calculator
We build simple, trustworthy geometry tools that run entirely in your browser.
Perimeter Calculator helps you find the distance around common 2D figures without sign-ups or downloads.
Every page is static, fast on mobile, and focused on accurate formulas explained in plain language.
Questions or feedback? Email us through the contact page.
- Free perimeter math for 17 shape types
- Private calculations on your device
- Guides and blog posts for deeper learning