Convert a Unix timestamp to a date

Works offline · never uploaded 0 uses

Convert a Unix timestamp to a human-readable date, or a date back to a timestamp, in your browser.

Updated July 27, 2026

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Timestamp to date

Local time
UTC

Date to timestamp

Seconds
Milliseconds

Runs entirely in your browser — nothing is sent to a server
Auto-detects seconds vs. milliseconds, shown in local time and UTC
Free, no account required

How it works

1
Paste or enter the value you want to convert.
2
Conversion happens instantly as you type.
3
Review the result in the target format.
4
Copy the result to your clipboard.

Why use this tool

Every dev utility, one place

Format, convert, encode, decode, and generate — no more juggling ten tabs.

100% private, always

Every tool runs in your browser — your code and data are never sent anywhere.

Works on any device

Runs on Windows, Mac, Linux, iOS, and Android — nothing to install.

Instant results

No queues, no build step — results update as you type.

Built to handle real data

Full Unicode support and RFC-compliant parsing, edge cases included.

Free, always

Free to use, with no rate limits, sign-up, or trial period.

Frequently asked questions

It automatically assumes values larger than 10 digits (like those from JavaScript) are in milliseconds.

Yes, entering standard date formats will output the corresponding Unix epoch value.

It displays the result in both absolute Coordinated Universal Time (UTC) and your system's local time zone.

The tool uses 64-bit integer processing in JavaScript, completely bypassing the classic 32-bit overflow limitation.

No, standard Unix time specifically ignores leap seconds, assuming every day is exactly 86,400 seconds long.

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