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Unix Timestamp Converter

Convert between Unix timestamps and human-readable dates in seconds or milliseconds, using your local timezone.

Paste a Unix timestamp in seconds or milliseconds to read it as a local date, or enter a date and time to get the timestamp.

Unix timestamp
Date and time

What this Unix timestamp converter does

Convert between Unix timestamps and human-readable dates in either direction, in seconds or milliseconds. All conversions use your browser's local timezone and run entirely on your device.

How it works

Unix timestamp is the number of seconds elapsed since January 1, 1970, 00:00:00 UTC (the "epoch"). Many systems use milliseconds instead; pick the matching unit.
Timestamp → date. Type a number; the readable local date and time appear instantly.
Date → timestamp. Type a date like 2026-08-07 12:00:00; the timestamp appears instantly.
Ambiguity. A date you enter is read as your local time. To force UTC, enable the "Show UTC" option or append a Z to an ISO value.

Frequently asked questions

How do I convert a Unix timestamp to a date?

Paste the timestamp into the converter. It returns the date and time in your local timezone and accepts both seconds and milliseconds.

What is the difference between seconds and milliseconds?

Unix timestamps in seconds are 10 digits, while milliseconds are 13 digits. The converter detects and handles both.

Can I convert a date back to a Unix timestamp?

Yes. Enter a date and time and the tool produces the corresponding Unix timestamp in your local timezone.

Does Unix Timestamp Converter upload my data?

No. Unix Timestamp Converter runs entirely in your browser — your input never leaves this page.

Is Unix Timestamp Converter free to use?

Yes. Unix Timestamp Converter is completely free, with no account and nothing to sign up for.

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Updated 2026-08-07 · Runs in your browser — your data never leaves this page.