Timestamp Converter

Convert Unix seconds to dates and back.

● Runs locally in your browser. No file or text uploads.

Understand epoch time

Unix timestamp 0 means 1970-01-01T00:00:00.000Z. Local time depends on your browser time zone.

When to use it

A 13-digit timestamp is often milliseconds. Convert it to seconds before using this tool; confirm the source’s unit.

About this tool

Convert Unix seconds to dates and back. Use it without creating an account. Results are available immediately, and inputs are not saved between visits.

Does this send my input to a server?

Inputs are processed locally. Optional Analytics sends page statistics only after consent; tool inputs and files are excluded.