Terms of Use
CalculateWise is operated by F4 Labs. By using the site you agree to the terms below.
Free to use
Every calculator and guide on CalculateWise is free. You do not need an account, and calculator inputs stay in your browser (see the privacy policy).
Results are estimates
Each calculator applies a stated formula to the numbers you enter. The result is only as good as the formula and the inputs. Tax rates, interest rates, medical reference ranges, material prices, and similar figures change over time, and a general formula cannot account for every situation. Each calculator page states the formula it uses and, where relevant, its limitations.
Not professional advice
Nothing on CalculateWise is financial, tax, legal, medical, nutritional, engineering, or construction advice. Use results as a starting point and confirm important decisions with a qualified professional, the official source (for example the IRS for tax figures), or the manufacturer's specification.
No warranty
The site is provided as is. We try to keep formulas correct and data current, but we do not guarantee that any result is accurate, complete, or suitable for your purpose, and we are not liable for decisions made on the basis of a result. If you find a wrong result, please report it so it can be fixed.
Content and reuse
Linking to any CalculateWise page is welcome. The articles, calculator explanations, and page design belong to F4 Labs; please do not republish them wholesale. Short quotations with a link back are fine.
Advertising
The site is funded by advertising served through Google AdSense. Ads are labelled and are separate from calculator results. How ad cookies work is described in the privacy policy.
Changes
These terms may be updated as the site changes. The current version is always at this address. Questions go to [email protected].