Timestamp Converter

Convert Unix timestamps (seconds or milliseconds) to UTC/local times and back.

Timezone offset: —

Unix timestamp (seconds)

Unix timestamp (milliseconds)

Local date & time

UTC ISO 8601

Preview

Local time

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UTC time

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Tips

Seconds timestamps are typically 10 digits; milliseconds timestamps are typically 13 digits.
ISO 8601 strings without a timezone are treated as UTC if you add a trailing 'Z'.
This tool uses your browser timezone for local time conversion.