Use Me Calc collects the small calculators you need now and then but always have to hunt for, such as how many days there are between two dates. Open the page and start calculating: no sign-up and no app to install.
The UK edition
These pages are the UK edition of the site. Amounts are in pounds, dates are written day first (13/10/2026), and anything that depends on rules or rates (tax, pay, pensions, mortgages) follows UK rules and links to the official UK source, such as GOV.UK, HMRC or the NHS. If you are in the United States, the US edition uses dollars and US rules.
Who runs it
The site is run by one person in Taiwan, from choosing tools and checking formulas to writing the explanations. The name Use Me Calc is a pun on yù mǐ (玉米), Chinese for “corn”.
The cat in the logo
The logo is Corn (玉米), a black-and-white tuxedo cat who lives with the site owner. Corn’s most important job is napping; the tools handle the rest.
Our principles
- No sign-up: tools work as soon as the page loads. You can also type a phrase like “100 days from today” into the search box.
- Calculations stay in your browser: amounts and dates you enter are not sent to our servers. See the privacy policy for what is recorded.
- Formulas and sources shown: every tool explains its calculation, and anything based on rules or rates links to the official source with a last-updated date.
- Mistakes get fixed: if you spot an error, email us and we will correct it once confirmed.
How the site is funded
The site is free and is paid for by adverts on the pages. Adverts are never placed next to input fields or results.