Timestamp Converter

Convert Unix timestamps, ISO 8601 strings, and date expressions to every format and timezone.

Accepts: 1714000000 (Unix sec) · 1714000000000 (Unix ms) · 2024-04-25T12:00:00Z (ISO 8601) · April 25 2024
Could not parse the input as a date.
Examples
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Unix sec: 1735689600 (Jan 1 2025 00:00 UTC)
Unix ms: 1714000000000
ISO 8601: 2024-12-25T00:00:00Z
Unix epoch: 0 (Jan 1 1970)
Conversions
Unix (seconds)
Unix (ms)
ISO 8601
RFC 2822
Relative
World Clock
TimezoneLocal timeOffset
How it works

Input parsing: pure integers < 10¹⁰ are treated as Unix seconds; larger integers as Unix milliseconds. String inputs are passed to new Date() which handles ISO 8601, RFC 2822, and most locale-specific formats.

Timezone conversion uses the browser's built-in Intl.DateTimeFormat API with IANA timezone names. This requires a modern browser and has no external dependencies.

The relative time is computed from the current browser clock and updates on each conversion.