Epoch • Milliseconds • Timezone

Unix Timestamp Converter

Convert Unix timestamps (seconds or milliseconds) to readable date-time and convert date-time back to epoch instantly.

Timestamp → Date

Auto-detecting seconds or milliseconds based on value length.

Selected timezone

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UTC (ISO 8601)

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Local browser time

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Date → Timestamp

Unix output

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Input interpreted as

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Frequently Asked Questions

How does auto-detect seconds vs milliseconds work?

Values with 13+ digits are treated as milliseconds. 10-digit values are treated as seconds. You can quickly validate output in both local and UTC formats.

Can I convert date-time in a specific timezone?

Yes. Select the input timezone before conversion. The tool interprets the datetime-local value in that zone and returns the correct Unix timestamp.

Does this converter account for daylight saving time?

Yes. Timezone conversions use browser Intl APIs, so DST transitions are applied based on selected date and timezone.

Is this Unix timestamp converter free?

Yes, it is free and works directly in your browser with no signup required.