How do I know if my timestamp is in seconds or milliseconds?

Timestamps with 10 digits (e.g., 1762391000) are in seconds; timestamps with 13 digits (e.g., 1762391000000) are in milliseconds. TypeKitTools detects this automatically.

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Private (Runs in Browser)

Free Utility

Unix Timestamp & Epoch Converter

Real-time Unix epoch clock and bidirectional converter between epoch timestamps (seconds/milliseconds) and human-readable dates across world timezones.

Current Unix Epoch Time

1794067195(1794067195237 ms)

Timestamp to Human Date

Auto-detects sec / ms

Enter Unix Timestamp (Seconds or Milliseconds):

Offsets:

Enter a valid integer Unix timestamp above to view formatted human dates.

Human Date to Unix Timestamp

Select Date & Time (LOCAL):

Pick a date and time to see its exact Unix timestamp representation.

What is Unix Epoch Time?

Unix time (also known as POSIX or Epoch time) is the number of seconds that have elapsed since the Unix epoch: 00:00:00 UTC on 1 January 1970 (excluding leap seconds).

Year 2038 Problem (Y2K38): On 19 January 2038 at 03:14:07 UTC, 32-bit signed integers will overflow past 2,147,483,647. Modern 64-bit systems handle timestamps for billions of years safely into the future.

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Frequently Asked Questions

Unix time is the number of seconds that have elapsed since January 1, 1970 00:00:00 UTC, not counting leap seconds.

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