Unix time converter

Convert seconds (up to 3 decimals), integer milliseconds, or ISO dates. Use YYYY-MM-DD (UTC) or a timestamp with seconds and Z / ±HH:MM.

Inputs stay in this page. Nothing is uploaded or saved automatically.

Mode

Seconds

Text and binary input: 1 MiB maximum; JSON: 1 MB, 200 levels, tree/diff: 10,000 nodes per input.