Date & Time Tools
3 free date & time tools, all running privately in your browser.
These free date and time tools convert Unix timestamps, calculate the days between two dates, convert across time zones, and work out exact ages. Each handles the fiddly edge cases - leap years, daylight saving, and seconds-versus-milliseconds - so you don't have to.
Date math is deceptively hard: time zones shift, months vary in length, and Unix timestamps come in both seconds and milliseconds. These tools handle those pitfalls correctly. Our blog post on Unix timestamps explains epoch time, the seconds/milliseconds trap, and the Year 2038 problem in detail.
Unix Timestamp Converter
Convert between Unix timestamps and dates.
Days Between Dates
Count the days between any two dates.
Time Zone Converter
Convert a time between world time zones.
Frequently asked questions
Does the timestamp converter handle milliseconds?
Yes. It accepts both 10-digit (seconds) and 13-digit (milliseconds) Unix timestamps and shows the result in both UTC and your local time zone.