Unix Timestamp Converter
Convert Unix timestamps to readable local and UTC dates.
Your inputs
Your inputs and files stay on your device.
Your result
A little input. A useful answer.
Enter your values and run the tool to see your result here.
How to use this tool
- Enter a timestamp or date.
- Choose conversion direction.
- Copy the formatted result.
About Unix Timestamp Converter
Convert Unix timestamps in seconds or milliseconds without uploading your data.
Does this tool send my data anywhere?
No. Its calculation or transformation happens on your device.
Using Unix Timestamp Converter with the right inputs
Convert Unix timestamps to readable local and UTC dates. Start by matching your task to the quantities and options shown below. The definitions of the inputs matter as much as the final number or transformed output; retain the original values so that you can repeat or check the result.
Inputs and options explained
- Conversion: choose Unix timestamp to date, Date and time to Unix timestamp.
- Unix timestamp: enter the value or text requested by this field. Check spelling, separators and case when they are significant to the operation.
Checking the result
Begin with a small input whose expected result you can check by inspection or a separate calculation. Apply the selected operation, compare the output with that expectation, and then change one input or option at a time. This helps distinguish a change caused by your settings from a difference in the source data.
Interpretation and limitations
Define whether your task concerns calendar dates or elapsed time before comparing results. Inclusive endpoints, local time zones, daylight-saving changes and holiday calendars can lead to different answers. A date calculation does not establish a legal or contractual deadline.
Why can two date tools show different totals?
They may include different endpoints or use different calendars, time zones or working-day definitions. Compare those conventions before treating the difference as an arithmetic error.
Before you use the output
- Choose the intended action: Convert. Re-run the operation after changing an input or mode so that you are checking the updated result.
- Read the result label and any accompanying explanation. Keep the input values or source file with the output so that a later comparison uses the same assumptions.
- If a result looks unexpected, check units, separators and selected options first. Try a smaller example you can verify rather than repeatedly changing several settings at once.
Questions or a result that needs checking?
If you find a discrepancy, report a problem with Unix Timestamp Converter. Include a non-sensitive example, the selected options, the result you expected and the result shown. This makes the issue easier to reproduce. See About & privacy for how the site handles tool inputs.