Time & Date tools
Time and date calculators for planning and scheduling, date math, ages and countdowns, time cards, timers, sun and moon times, time zones, and epoch conversions. Each runs instantly in your browser.
Popular Time & Date tools
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Date Difference Calculator
Find the exact time between two dates, in years, months and days, plus totals in weeks, days, hours and minutes. Optionally count both endpoints. Calculates in your browser.
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Add or Subtract Days Calculator
Add or subtract days or weeks from any date and get the resulting date with its day of the week. Calculates in your browser.
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Business Days Calculator
Count working days (Mon–Fri) between two dates, or add a number of business days to a date, with custom holidays skipped. Calculates in your browser.
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Age Calculator
Work out exact age in years, months and days from a date of birth, plus totals in months, weeks, days and hours, and a countdown to the next birthday. Calculates in your browser.
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Countdown Timer
A live countdown to any date and time, ticking down in days, hours, minutes and seconds against your device clock. Runs entirely in your browser, even offline.
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Days Until Calculator
Count the days until (or since) any date, broken down into weeks and working days. Calculates in your browser.