Terms of Use

Last updated: May 25, 2026.

Toolkit Shelf provides free calculators and informational content for general use. Results are estimates based on the inputs and formulas shown on the relevant page.

You are responsible for checking important calculations before making financial, legal, tax, medical, housing, or business decisions.

The site may change, add, or remove calculators at any time. Use of Toolkit Shelf means you accept these terms.