Timestamp Converter
Convert Unix timestamps, milliseconds, ISO dates, and UTC date strings locally.
Converts Unix timestamps and ISO date strings locally. Output is UTC to avoid timezone surprises.
Unix seconds
1700000000
Unix milliseconds
1700000000000
Detected unit
seconds
UTC output
Questions
Does this handle seconds and milliseconds?
Yes. Choose seconds, milliseconds, or auto-detect when converting Unix timestamps.
Why does the output use UTC?
UTC avoids timezone ambiguity and makes timestamp conversions easier to compare across systems.
Does Utilumo upload my input?
No. This tool is designed for local browser processing and does not send your input to a server.
Do I need an account?
No. Utilumo tools are built to work without accounts or sign-in.