Epoch Converter
Unix seconds and milliseconds to dates.
Loading tool
Paste seconds or milliseconds. Values near 1e12 are treated as milliseconds. Output shows UTC and a zone you pick.
How to use this tool
- Enter the source value. Type the number, color, or timestamp you want to convert.
- Pick the target unit. Choose the output system. Conversion runs locally.
- Copy the converted value. Use Copy when you need the result elsewhere.
Precision
Seconds, milliseconds, and ISO-8601 strings are accepted. Microsecond stamps are truncated to milliseconds in JavaScript.
Frequently asked
Is this the same as the Unix timestamp page?
That page focuses on now and live ticks. This page is a converter for pasted values.
What is the year 2038 issue?
32-bit signed seconds overflow in 2038. This page uses wider JS numbers.
Can I convert a range?
One value at a time. Paste another after you copy.
Does it accept ISO with a Z?
Yes. Offset-less strings are treated as UTC unless you say otherwise.
Are leap seconds shown?
No. Unix time skips leap seconds.