Timestamp

About this tool

Convert between Unix epoch seconds/milliseconds and ISO 8601 dates. Essential when debugging logs, JWT exp claims, and database timestamps.

Your input is processed in the browser. We do not upload tool payloads to our servers.

Common use cases

• Decode Unix times from API logs.
• Convert meeting times to UTC epoch for APIs.
• Verify JWT expiration timestamps.

Examples

FAQ

Seconds vs milliseconds?

Unix time is often in seconds; JavaScript Date.now() uses milliseconds. Pick the correct unit.