Date & Time Calculators — Age, Countdown, Time Zones

Free date and time calculators for exact age, days between dates, birthday countdown, and time zones. Instant, accurate answers with no sign-up required.

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  Age Calculatorlive

  Calculate your exact age in years, months, days, hours, and minutes from any date of birth. Includes next birthday countdown and milestone tracker.

  28 yrs · 10,412 days old
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  Date Difference Calculatorlive

  Calculate the exact number of days, weeks, months, and years between any two dates. Includes business days and quick presets.

  90 days · 12 wks · 2 mo
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  Time Zone Calculatorlive

  Convert any date and time between time zones instantly. Compare multiple zones side by side.

  NY 9:00 AM → London 2:00 PM
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  Birthday Countdown Calculatorlive

  Live countdown in days, hours, minutes, and seconds until your next birthday, with milestone table and shareable summary.

  47 days · 3 hrs · 12 min
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  Days Until Calculatorcoming soon

  Countdown to any future date with weekday and milestones.
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  Workday Calculatorcoming soon

  Add or subtract business days, excluding weekends and holidays.