Last updated: October 23, 2026. By using TrowelMath you agree to these terms.
Information only
TrowelMath provides free calculators and reference pages for general information. Results are estimates based on the inputs you provide and the assumptions stated on each page. They are not professional advice of any kind (financial, tax, legal, payroll, engineering or medical) and are not an offer of credit or a quote. Check important figures with a qualified professional or the relevant authority before acting.
Accuracy
We work to keep formulas and data correct and cite our sources, but we cannot guarantee that every figure is complete, current or suitable for your situation. Data sets are updated periodically, and each page shows the period it covers.
Acceptable use
You may use the tools for personal and commercial purposes. Do not attempt to disrupt the site, scrape it at a rate that degrades service, or present our content as your own.
Intellectual property
Site text, design and code are ours. Public data remains the property of its publishers and is used under their terms; attributions appear on the pages that use it. Brief quotations with a link back are welcome.
Third-party links
Links to other sites are provided for convenience. We are not responsible for their content, products or policies. Some links are affiliate links, as explained in our disclosure.
Liability
The site is provided "as is" without warranties. To the fullest extent permitted by law, we are not liable for losses arising from use of the site or reliance on its results.
Changes and contact
We may update these terms; the date above shows the latest version. Questions: contact us.