Legal
Terms of Use
Last updated September 24, 2026. By using Calculyn you agree to these terms. They're written to be read.
Using Calculyn
Calculyn provides free calculators for personal, educational and general informational use. You're welcome to use them as often as you like and to share links to them.
Results are estimates
Our calculators use standard formulas and the inputs you provide. Results are estimates and general calculations. They can differ from real-world outcomes because of assumptions, rounding, rules that change over time and details specific to your situation.
Calculyn is not professional advice. Results are not financial, investment, tax, legal, medical, nutritional, engineering or other professional advice. Before making important decisions — such as borrowing, investing, filing taxes, changing your diet or starting a construction project — please consult a qualified professional.
Accuracy
We work hard to keep formulas correct and time-sensitive figures current, and we show the year where it matters. Even so, we can't guarantee that every result is complete, accurate or up to date. If you think something is wrong, please let us know.
Acceptable use
Please don't misuse the site: for example, by trying to disrupt it, access it in automated ways that overload it, submit unlawful or abusive content through our forms, or copy the site wholesale.
Content and trademarks
The Calculyn name, design, text and calculator implementations belong to Calculyn. Formulas themselves are widely known and free for anyone to use.
Third-party links
Calculyn may link to other websites. We're not responsible for their content or practices.
Liability
Calculyn is provided "as is". To the extent permitted by law, Calculyn isn't liable for losses arising from reliance on calculator results or from use of the site.
Changes
We may update these terms from time to time. The date above shows the latest version. See also our Privacy Policy.