Choose a calculator. Your entries and calculations stay in your browser.
Use a dot for decimals, with no commas. Scientific notation such as 1e6 is accepted. Numbers may be zero or have a magnitude from 1e-100 to 1e100; results are approximate.
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Convert metric and imperial lengths.
Percentage ÷ 100 × Number.
Price: 0 to 1,000,000,000,000. Discount: 0 to 100%. Results use the same currency as your price, rounded to two decimal places. Tax is not included.
End date minus start date, in calendar days. The same date gives 0; the start day is not counted. An earlier end date gives a negative result. Enter dates as YYYY-MM-DD if your browser has no date picker.