Free Unix Timestamp Converter
Convert between Unix timestamps (epoch) and human-readable dates. Supports seconds, milliseconds, ISO 8601, and your local timezone. Live current epoch ticker included.
Timestamp → Date
Auto-detects seconds vs. milliseconds based on digit length.
2026-06-13T08:13:03+00:00Sat, 13 Jun 2026 08:13:03 GMTSat Jun 13 2026 08:13:03 GMT+0000 (Coordinated Universal Time)1781338383178133838300017813383830000001781338383000000000<t:1781338383:R><t:1781338383:F>Around the world
Jun 13, 2026, 08:13:03 UTCJun 13, 2026, 04:13:03 EDTJun 13, 2026, 09:13:03 GMT+1Jun 13, 2026, 10:13:03 GMT+2Jun 13, 2026, 12:13:03 GMT+4Jun 13, 2026, 13:13:03 GMT+5Jun 13, 2026, 13:43:03 GMT+5:30Jun 13, 2026, 16:13:03 GMT+8Jun 13, 2026, 17:13:03 GMT+9Jun 13, 2026, 18:13:03 GMT+10Jun 13, 2026, 01:13:03 PDTJun 13, 2026, 05:13:03 GMT-3Date → Timestamp
Frequently asked questions
What is a Unix timestamp?
The number of seconds (or milliseconds) elapsed since 00:00:00 UTC on 1 January 1970 — the Unix epoch. It is a compact, timezone-independent way to represent a moment in time.
Seconds vs milliseconds — which does my system use?
Unix tools, PostgreSQL, and many APIs use seconds (10 digits in current era). JavaScript's Date.now() and Java's System.currentTimeMillis() use milliseconds (13 digits). The tool auto-detects which based on the length.
When does the Year 2038 problem hit?
On 19 January 2038, 32-bit signed Unix timestamps overflow. Systems using 64-bit timestamps are unaffected. Most modern systems migrated years ago, but legacy embedded devices and databases may still need updating.
What is ISO 8601?
An international standard for representing dates and times as text, e.g. 2026-05-25T14:30:00Z. Unambiguous across locales and the format used in JSON, RFC 3339, and most modern APIs.
Convert Unix timestamps to human-readable time and back, with full timezone support. ISO 8601, RFC 2822, and relative time formats all covered.
How to use
- 1Enter a Unix timestamp (seconds or ms) — automatic detection.
- 2Or pick a date from the calendar.
- 3See output in your timezone + UTC + ISO 8601 + RFC 2822 + relative ('5 hours ago').
- 4Pick any timezone from the dropdown for conversions.
Why use this tool
- All major formats: Unix sec/ms, ISO, RFC, relative.
- Timezone-aware — pick any of 400+ IANA zones.
- Auto-detects seconds vs milliseconds based on length.
Real-world examples
Log debugging
Paste timestamp 1716638400 → see '2024-05-25 12:00:00 UTC' / 'May 25, 2024 at 5:00 PM PST' / '~3 days ago'.
API testing
Pick 'today + 1 hour' → get matching Unix timestamp for setting JWT exp claims.