Tool guide
Convert seconds, milliseconds and local time
Convert Unix timestamps and dates while viewing the device’s local time alongside UTC.
How to use
- Confirm whether the source uses seconds or milliseconds.
- Select the unit and compare local and UTC output.
- Check the timezone of date input when converting back.
Example and expected result
Input: 1704067200 seconds
UTC: 2024-01-01 00:00:00 UTC
On a UTC+8 device: 2024-01-01 08:00:00Capabilities and limits
- Local time follows device settings, not a fixed Beijing timezone.
- Dates without a timezone follow browser parsing rules; no arbitrary timezone selector is provided.
Troubleshooting
A date near 1970 often indicates the wrong unit. An offset of several hours calls for checking local time versus UTC.
Data processing and storage
Dates and timestamps are converted in the current page without automatic saving or a remote time-service query.
Read the full data-processing notice