Using the calculators
CalcPenguin is free to use for personal, educational and business purposes. By using the site you accept these terms.
Results are estimates
We work hard to keep every calculator accurate and current, but results are estimates that depend on what you enter and on rules that change. They are not financial, legal, tax, medical or professional advice. Check anything important with a qualified professional or the official authority before you rely on it.
No warranty
The site is provided “as is”. We don't promise it will always be available, error-free or up to date, and to the extent the law allows, we aren't liable for losses arising from using it or relying on its results.
Our content
The text, design and code of CalcPenguin belong to us. You're welcome to link to any page and to share results. Please don't copy our pages or calculators wholesale, frame the site as your own, or overload it with automated requests.
Other sites
Links to official sources and other sites are for reference. We aren't responsible for their content.
Changes
We may update these terms; the date below shows the latest version.
Contact
Last updated 25 October 2026.