Timestamp Converter
Convert Unix timestamps to readable dates and back, in seconds or milliseconds.
Runs in your browserCurrent time
Timestamp → Date
About this tool
Move between Unix timestamps and readable dates in both directions, with local time, UTC and a relative description shown side by side. The unit is always explicit rather than guessed from the number of digits, because a guess that happens to be right today is a bug waiting to happen tomorrow.
How to use it
- 1Copy the current timestamp from the card at the top if that is what you need.
- 2Switch to one of the two conversion tabs and paste a timestamp, or pick a date.
- 3Read the local, UTC and relative values, and copy whichever you need.
Frequently asked questions
Why do I have to choose seconds or milliseconds?
Guessing from the number of digits works today — ten digits means seconds, thirteen means milliseconds — but it is not a rule, only a coincidence of the current era. The tool shows you what it would have guessed while still converting according to your explicit choice, so a wrong guess never silently produces a wrong date.
Which time zone are the results in?
All three are shown. The first line is your device's local time with its UTC offset, the second is the same instant in ISO 8601 UTC, and the third is the relative distance from now. When two people in different offices disagree about a timestamp, this is usually why.
What is the 2038 problem I keep hearing about?
Systems that store Unix time in a signed 32-bit integer overflow on 19 January 2038. This tool multiplies the value before constructing a date, so it handles times well beyond that automatically — but the system you are pasting the value into may not.