Calculators
Percentages, dates, averages and everyday calculations with the working shown. Type a value and see the result update, in your locale's number format.
Tools in this category
3 toolsCalculators here are for the questions that come up in a message or a meeting: what is 15 percent of this amount, how many days until a date, what is the average of these numbers, how much is a tip split four ways. Each calculator shows the result live and, where it helps, the formula it used, so you can check it or repeat it by hand. Numbers accept a decimal comma or a point and are displayed in the format of the page language, with a raw value you can copy. Nothing is sent to a server, and the last input is kept in your browser only, so you can return to a calculation later on the same device. The calculators are designed for everyday use; for tax, loan or medical decisions, treat the result as a starting point and confirm it with an appropriate source.
Common questions
Which decimal separator should I use?
Either. The calculators read 2,5 and 2.5 as the same number, whatever the page language. Results are displayed in the format of the page language, and a raw value with a point is shown beside it for pasting into a spreadsheet or code.
Can I see how a result was calculated?
Yes. Where a formula is involved, the calculator shows it with your numbers filled in, below the result. This lets you verify the arithmetic or repeat it elsewhere. Rounding is applied only for display; the raw value keeps full precision.