About Epoch / Unix Timestamp Converter
Convert Unix epoch timestamps to human-readable dates and back, in both seconds and milliseconds, with a live current timestamp always on screen. Unix time counts the seconds since 1 January 1970 UTC.
How to Use
- Copy the live current timestamp, or paste a timestamp to convert.
- The converter auto-detects seconds vs milliseconds and shows both local and UTC dates.
- To go the other way, pick a date and time to get its timestamp.
- Copy any value with one click.
Why Use This Tool?
- Accurate — built on precise, well-tested mathematical formulas.
- Instant — all calculations happen client-side for zero latency.
- Private — no data is sent to any server; your information stays on your device.
- Free — no sign-up, no limits, no hidden costs.
Frequently Asked Questions
What is a Unix timestamp?
It is the number of seconds elapsed since 00:00:00 UTC on 1 January 1970 (the 'Unix epoch'), ignoring leap seconds. It is a timezone-independent way to represent an instant in time.
Seconds or milliseconds — how do I tell them apart?
A 10-digit timestamp is in seconds; a 13-digit one is in milliseconds. This tool detects the length automatically and converts either correctly.
What happens in 2038?
Systems that store Unix time in a signed 32-bit integer overflow on 19 January 2038 (the 'Year 2038 problem'). Modern 64-bit systems are unaffected for billions of years.