Example
A date in Nov 2023 (local time)
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and back in your browser. Free online Unix time converter for both seconds and milliseconds — no uploads.
Enter the values below, then press Calculate (or press Enter). The calculator updates your results instantly. Try different values to see how your inputs change the outcome.
- Direction — enter a choice from the options.
- Timestamp or date — enter a text value. A typical Timestamp or date would be e.g. 1700000000 or 2023-11-14 22:13.
- Timestamp unit — enter a choice from the options.
- Review your results — the key output is highlighted, with supporting figures below.
Loading calculator…
Results
Human-readable date
| Detail | Value |
|---|---|
| Unix timestamp | |
| Unit | |
| Note |
What is this calculator for?
Convert between Unix timestamps (seconds or milliseconds since epoch) and human-readable local dates, in both directions.
How to Use This Calculator
Enter the values below, then press Calculate (or press Enter). The calculator updates your results instantly. Try different values to see how your inputs change the outcome.
- Direction — enter a choice from the options.
- Timestamp or date — enter a text value. A typical Timestamp or date would be e.g. 1700000000 or 2023-11-14 22:13.
- Timestamp unit — enter a choice from the options.
- Review your results — the key output is highlighted, with supporting figures below.
What You'll Need
- Direction
- a choice from the options (Timestamp → Date, Date → Timestamp) · optional
- Timestamp or date
- a text value · required
- Timestamp unit
- a choice from the options (Seconds, Milliseconds) · optional
About This Calculator
This Unix timestamp converter works both ways: turn a Unix epoch number into a readable date, or turn a date into its Unix timestamp.
A Unix timestamp counts seconds since 1 January 1970 00:00:00 UTC (milliseconds are also supported — some systems, such as JavaScript’s Date, use milliseconds). Choose the direction, enter your value, and the tool shows the corresponding date or number in your local time zone.
All conversion happens in your browser — nothing is sent anywhere.
Worked Examples
Frequently Asked Questions
What is the difference between seconds and milliseconds?
Seconds is the standard Unix epoch unit. JavaScript timestamps and some APIs use milliseconds (1000× larger). A 13-digit number is milliseconds; a 10-digit number is seconds.
What time zone does the result use?
The human-readable date is shown in your local time zone. The timestamp itself is always relative to UTC, so the same timestamp can display different local times.