Yes, completely free — no account, no subscription, no limits.

Do you upload or store my timestamps?

No. Everything runs in your browser using JavaScript. Your timestamps never leave your device and are not sent to any server.

Does it work offline?

Yes. Once the page is loaded, it works fully offline. There are no external API calls or CDN dependencies.

Does it support millisecond (ms) timestamps?

Yes. The tool automatically detects whether your input is in seconds (10 digits) or milliseconds (13 digits). You can also toggle the live clock between seconds and milliseconds.

What date formats does the converter output?

For each timestamp you convert, the tool shows local time (with timezone abbreviation), UTC, ISO 8601, and the raw value in both seconds and milliseconds.

Which timezone does the converted date use?

The readable date is shown in your device's own timezone, because that is almost always the one you are checking against. A Unix timestamp itself carries no timezone - it counts seconds since 1 January 1970 UTC - so the same number legitimately displays as different wall-clock times on machines set to different regions.

What is the year 2038 problem, and does it affect this tool?

Systems that store timestamps in a signed 32-bit integer run out of room on 19 January 2038 and wrap around to 1901. This converter uses JavaScript numbers rather than 32-bit integers, so dates well beyond 2038 convert correctly here. The limit is a property of the system that produced your timestamp, not of the conversion.

⏱️ Unix Timestamp Converter

Instantly convert Unix epoch timestamps to readable dates — or any date back to a timestamp — with a live epoch clock ticking in real time. Completely free and runs entirely in your browser with no uploads or account required.

Timestamp → Date

Unix timestamp

Date → Timestamp

Date & time (local)

Private by design. This tool runs entirely in your browser — nothing you enter is uploaded or stored, and it works offline.

About

This tool provides a live Unix epoch clock (seconds or milliseconds), two-way conversion between timestamps and human-readable dates (local time, UTC, ISO 8601), and one-click copy for every result. All processing happens locally in your browser — your timestamps never leave your device, making it safe to use with sensitive log data or production timestamps.

How to use

View the live epoch clock at the top — toggle the switch to show milliseconds instead of seconds.
To convert a timestamp to a date, paste your Unix timestamp into the 'Timestamp → Date' field and click Convert (or press Enter). The tool auto-detects seconds vs. milliseconds.
Results show local time, UTC, ISO 8601, and both seconds and milliseconds forms — click Copy next to any row.
To convert a date to a timestamp, pick a date and time in the 'Date → Timestamp' panel and click Convert.
Use the 'Now' button in any panel to instantly fill in the current date and time.

FAQ

Is this tool free?: Yes, completely free — no account, no subscription, no limits.
Do you upload or store my timestamps?: No. Everything runs in your browser using JavaScript. Your timestamps never leave your device and are not sent to any server.
Does it work offline?: Yes. Once the page is loaded, it works fully offline. There are no external API calls or CDN dependencies.
Does it support millisecond (ms) timestamps?: Yes. The tool automatically detects whether your input is in seconds (10 digits) or milliseconds (13 digits). You can also toggle the live clock between seconds and milliseconds.
What date formats does the converter output?: For each timestamp you convert, the tool shows local time (with timezone abbreviation), UTC, ISO 8601, and the raw value in both seconds and milliseconds.
Which timezone does the converted date use?: The readable date is shown in your device's own timezone, because that is almost always the one you are checking against. A Unix timestamp itself carries no timezone - it counts seconds since 1 January 1970 UTC - so the same number legitimately displays as different wall-clock times on machines set to different regions.
What is the year 2038 problem, and does it affect this tool?: Systems that store timestamps in a signed 32-bit integer run out of room on 19 January 2038 and wrap around to 1901. This converter uses JavaScript numbers rather than 32-bit integers, so dates well beyond 2038 convert correctly here. The limit is a property of the system that produced your timestamp, not of the conversion.