Tools/Date & Timestamp Converter
Calculators & Time

Date & Timestamp Converter

Paste a date or timestamp in almost any format and get it converted to every other common representation at once.

Free & unlimitedRuns in your browserNo sign-up required
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How it works

Three steps, no setup

1

Enter a date or timestamp

ISO 8601, Unix seconds, Unix milliseconds, or a readable date string.

2

Get every format

UTC, RFC 2822, ISO 8601, and human-readable versions all appear together.

3

Copy what your system expects

Useful for debugging API payloads and log timestamps.

Common questions

Frequently asked questions

What is the difference between Unix seconds and milliseconds?
Unix time in seconds counts from January 1, 1970, while many JavaScript APIs use milliseconds — mixing the two up is a common source of "year 1970" or "year 50000" bugs.
Does it account for time zones?
Conversions are anchored to UTC, with the option to view the equivalent local and human-readable representations.
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