Timestamp Tools
Convert timestamps, calculate age, and find date differences.
Convert between Unix timestamps and human-readable dates, calculate exact age in years, months, and days, find the difference between two dates, or see what a date and time looks like across major world timezones — accounting for daylight saving time automatically.
How to use this tool
- 1Click the current timestamp box to copy it, if that's all you need.
- 2To convert a Unix timestamp to a date, paste it into the "Unix timestamp → Date" field — the readable date appears below it instantly.
- 3To go the other way, pick a date and time in the "Date → Unix timestamp" field to see its Unix timestamp.
Frequently asked questions
What is a Unix timestamp?
It's the number of seconds that have elapsed since January 1, 1970 00:00:00 UTC (the "Unix epoch") — a compact way computers represent a point in time, independent of timezone or date format.
Why does my 13-digit timestamp look wrong?
Some systems (like JavaScript's Date.now()) use milliseconds instead of seconds, giving a 13-digit number instead of 10. This tool auto-detects timestamps longer than 10 digits and treats them as milliseconds.
What timezone is the converted date shown in?
The result reflects your browser's local timezone setting, since JavaScript's Date object always displays in local time unless told otherwise.