Birdor Tools · Time

Timestamp ⇄ Datetime Converter

Convert Unix timestamps to human-readable datetimes and back again. Birdor handles both seconds and milliseconds, shows results in UTC, your local timezone, or any custom IANA timezone, and keeps ISO 8601 / RFC3339 strings ready for logs, APIs, and database fields. Everything runs locally in your browser.

Input

Enter a Unix timestamp in seconds or milliseconds. We'll auto-detect the unit by default.

Unix timestamp

Interpret as:

Timezone

Choose how the human-readable datetime is displayed. Unix timestamps themselves are always timezone-agnostic.

Human-readable datetime

Displayed in UTC.

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ISO 8601 (UTC)

ISO 8601

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RFC3339 (UTC)

RFC3339

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Unix timestamps

These are derived from the datetime above. They are always timezone-independent.

Seconds

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Milliseconds

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TIP: You can paste timestamps from logs on the left and instantly see when an event happened in different timezones.