Choose input
Choose timestamp or UTC date conversion.
Epoch Timestamp Converter
Convert Unix timestamps and UTC dates with explicit units.
Current Unix time: Loading live clock… seconds
Auto guesses by integer digits. Select units explicitly for ambiguous values; date output retains milliseconds.
Last reviewed: · Testing methodology
How to use
Choose seconds, milliseconds or microseconds, or use automatic inference based on integer digits. Date output shows UTC and your local timezone; the current clock refreshes live.
Set options
Select units and enter a timestamp, or complete UTC fields.
Use the result
Read or copy the result.
Examples and checks
Worked example
Use the settings below and inspect the saved result.
- Input
- 1700000000.123 seconds
- Output
- 2023-11-14T22:13:20.123Z
Limits and questions
Inputs are processed in your browser. Analytics and advertising can make separate network requests.
Supported behavior
Choose seconds, milliseconds or microseconds, or use automatic inference based on integer digits. Date output shows UTC and your local timezone; the current clock refreshes live.
Limits and review
JavaScript Date range; date precision is milliseconds. Automatic units are a guess. Select units explicitly for ambiguous timestamps; sub-millisecond detail is not retained.
Verification
Review record: 2026-08-26. See the documented behavior and limitations above, and the testing standards for the scope of review.
Testing methodologyWhen to use another workflow
Use a date-time library or database function for named time zones, calendar arithmetic, leap-second policy, or bulk conversions.
Frequently asked questions
- What are the limits?
- JavaScript Date range; date precision is milliseconds.
- What should I check before using the output?
- Automatic units are a guess. Select units explicitly for ambiguous timestamps; sub-millisecond detail is not retained.