Free browser tool
Timestamp Converter
Convert Unix timestamps to readable dates and convert dates back to Unix time.
Updated 2026-05-09
How to use this tool
- Paste or type your input into the tool.
- Choose the action or option that matches your task.
- Review the output before copying it into another app.
Notes
Convert seconds or milliseconds timestamps into local time and UTC ISO output.
Inputs are processed in the browser for this static MVP. Avoid pasting secrets into any online tool unless you understand the environment.
FAQ
What is the difference between seconds and milliseconds?
Unix seconds count whole seconds since 1970-01-01 UTC. Milliseconds are one thousand times larger.
Why can local time differ from UTC?
Local time uses your browser timezone. UTC is a universal reference time.
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