Everyday Calculators

Tips, dates, and daily utilities — 10 free tools

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Split the bill and calculate tip per person.

Find sale prices and savings from any markdown.

Convert length, weight, temperature, volume, area, speed, and data.

Count days, weeks, and months between two dates.

Exact age in years, months, and days from birth date.

Add or subtract durations and clock times.

Calculate work hours between start, end, and break times.

Miles per gallon, liters per 100 km, and the cost of a trip.

Convert a date and time between time zones, including daylight saving.

Count weekdays between two dates, with US federal holidays optional.