Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and back.
About this tool
Translate epoch seconds or milliseconds into human-readable dates and vice versa. Handy for server logs, webhook payloads, JWT exp claims, or database records stored as integers.
Supports seconds and milliseconds. Combine with the Timezone Converter for offset-aware display across regions. See the Unix timestamps vs ISO dates guide on the blog for DST and JWT exp pitfalls.
Timestamps you enter are processed locally.
How to use
- Paste a Unix timestamp in seconds or milliseconds, or an ISO-8601 date string.
- Read the converted ISO, UTC, local, and epoch values in the output pane.
- Copy the format you need for logs, APIs, or database queries.
- Switch direction anytime: epoch numbers and date strings both work as input.
Example
Epoch seconds to readable date
Input
1700000000
Output
ISO 8601: 2023-11-14T22:13:20.000Z UTC: Tue, 14 Nov 2023 22:13:20 GMT Unix (seconds): 1700000000
Values with 13+ digits are treated as milliseconds; 10 or fewer as seconds.
Limitations
- Local time follows your browser’s timezone, not a server or deployment region.
- Very large or fractional epoch values outside JavaScript’s safe Date range will fail.
- Does not apply custom calendar systems or leap-second adjustments beyond what Date provides.
Related guides
1Related tools
1Frequently asked questions
What does the Unix Timestamp Converter do?
Convert Unix timestamps to human-readable dates and back. Runs in your browser — no install, no account.
How do I use the Unix Timestamp Converter?
Paste a Unix timestamp in seconds or milliseconds, or an ISO-8601 date string. Read the converted ISO, UTC, local, and epoch values in the output pane. Copy the format you need for logs, APIs, or database queries. Switch direction anytime: epoch numbers and date strings both work as input.
Is the Unix Timestamp Converter free?
Yes. No signup, no usage limits, no paywall.
Does the Unix Timestamp Converter upload my data?
No. Processing happens locally in JavaScript. Your input is not uploaded, stored, or logged.
What are the limitations of the Unix Timestamp Converter?
Local time follows your browser’s timezone, not a server or deployment region. Very large or fractional epoch values outside JavaScript’s safe Date range will fail. Does not apply custom calendar systems or leap-second adjustments beyond what Date provides.