Terms of Use

Last updated June 3, 2026.

Educational estimates only

The calculators and content on hiinformation are provided for general educational purposes. They are estimates, not financial, legal, tax, or medical advice. Always verify important decisions with a qualified professional and your own primary sources.

No warranty

We work to keep formulas and conversion factors accurate and cite our sources, but we make no warranty that results are error-free or fit for a particular purpose. You use the calculators at your own risk.

Acceptable use

You may use the calculators for personal and commercial reference and embed them where the embed code is provided. Don't misrepresent results as professional advice or scrape the site in ways that disrupt service.

Changes

We may update these terms as the site grows. Continued use after an update means you accept the revised terms. Spot an error in a calculation? Please report it.