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Unix Timestamp Converter

Q: Seconds or milliseconds?

Unix time can be in seconds (10 digits) or milliseconds (13 digits). We detect and convert both.

Convert between Unix timestamps (seconds/milliseconds) and human-readable dates in local and UTC.

Last updated: 2025-03-02

Convert between Unix timestamps (seconds/milliseconds) and human-readable dates in local and UTC. Use this tool whenever you need to work with dates and timestamps quickly.

All processing runs in your browser — your data is never sent to our servers. No sign-up required.

Use the fields below to enter your input, adjust any options, then copy or download the result.

How to use

Enter or paste your input in the field below.
Adjust options if the tool supports them.
Copy or download the result as needed.

Unix timestamp (seconds or milliseconds)