Date & Time Tools

Age, date differences, time zones, world clocks, timestamps and calendars.

• Age Calculator — Calculate your exact age in years, months and days, plus total weeks, days and your next birthday.
• Date Calculator — Find the days, weeks, months and business days between two dates, or add and subtract time from any date.
• Time Calculator — Add or subtract hours, minutes and seconds, find the time between two clock times overnight, and total durations.
• Time Zone Converter — Convert a date and time between any IANA time zones with daylight saving handled, offsets shown and multiple targets.
• World Clock — Live clocks for the cities you choose, saved in your browser, with day/night icons, UTC offsets and your local time highlighted.
• Calendar Generator — Create a printable monthly or yearly calendar for any year, with your week start, weekends and highlighted dates.
• Timestamp Converter — Convert Unix timestamps in seconds or milliseconds to local, UTC and ISO 8601 dates, and convert dates back to Unix time.