Unix Timestamp Converter
Text & Time
Convert Unix timestamps and calendar dates in either direction.
Current timestamp
—seconds
Timestamp to date
Convert seconds or milliseconds into readable date formats.
Converted times will appear here.
Date to timestamp
Choose a date and time, then convert it using the selected timezone.
The converted timestamp will appear here.
What is a Unix timestamp?
A Unix timestamp counts seconds or milliseconds from 1970-01-01 00:00:00 UTC. APIs, logs, JWTs and databases commonly use it.
Seconds and milliseconds
Current Unix seconds are usually 10 digits and milliseconds usually 13. Choose the unit represented by your source.
Timezone note
The same timestamp displays differently across timezones. Record the intended timezone when teams work across regions.
Use cases
When to use Unix Timestamp Converter
Convert Unix timestamps and calendar dates in either direction.
1Check when an API token or cache entry expires
2Decode a timestamp from a server log
3Prepare a date string for an API request
4Generate stable IDs, dates, or text comparisons for test data
5Normalize documentation, logs, and field naming across teams
6Explain cron schedules and calculate IPv4 CIDR subnets
Guidance
Get reliable results
- 1Confirm whether the source value is seconds or milliseconds
- 2Store timestamps in UTC for portability
- 3Verify the selected timezone before copying a result
Date display depends on browser timezone data and may differ for historical timezone rules.