Last updated: November 1, 2026
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Using the site
You may use our formulas and calculators free of charge for personal, educational and commercial projects. You may print our formula sheets for classroom and personal use. Please link to the original page instead of re-uploading our files elsewhere.
What you may not do
- Copy or republish whole pages of our text as your own
- Try to break, overload or hack the site
- Use the site for anything illegal or harmful
Content and accuracy
We work hard to keep everything correct, but the site is provided “as is”, without warranties of any kind. See our Disclaimer.
Links to other websites
We may link to other websites. We are not responsible for their content or privacy practices.
Changes
We may change these terms at any time. The date at the top shows the latest version.
Contact
Questions: hello@geometry-formulas.net.