Timestamp Converter

Convert between Unix timestamps and human-readable dates in various formats.

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Quick Tip

Paste a Unix timestamp, or press "use current time" to start from now.

About This Tool

Why use Timestamp Converter?

Convert a Unix timestamp into a readable date, or pick a date and get its timestamp. A Unix timestamp counts the seconds since 1 January 1970 UTC, which is why it appears in logs, APIs and databases: it is a single number with no time zone attached.

Both units are handled. Ten-digit values are read as seconds, thirteen-digit values as milliseconds — JavaScript's Date.now() returns milliseconds, while most backends store seconds. Results are shown in ISO 8601, UTC, your local time and as a relative description such as "3 days ago".

Key Benefits

Both directions

Timestamp to date and date to timestamp on the same screen.

Seconds and milliseconds detected

The unit is inferred from the size of the number, so pasted values just work.

UTC and local side by side

The most common source of confusion in log analysis, shown explicitly.

How to use Timestamp Converter

1
Paste a Unix timestamp, or press "use current time" to start from now.
2
Read the ISO 8601, UTC and local values, plus how long ago or ahead it is.
3
To go the other way, pick a date and time in the second field.
4
Copy the seconds or milliseconds value your system expects.

Best use cases

Read a timestamp from a log line or an API response.

Convert a date into the epoch value a query needs.

Check whether a token's expiry has passed.

Compare a UTC timestamp with your local clock.

Timestamp Converter FAQs

What is a Unix timestamp?

The number of seconds elapsed since 00:00:00 UTC on 1 January 1970, ignoring leap seconds. It is time zone independent, which makes it convenient for storage.

How do I tell seconds from milliseconds?

By length. Current timestamps in seconds have 10 digits; in milliseconds they have 13. This converter checks the size and tells you which it used.

What is the year 2038 problem?

Systems storing timestamps in a signed 32-bit integer overflow on 19 January 2038. Modern platforms use 64-bit values, which are good for billions of years.