Paste a Unix timestamp and get the ISO 8601 date, UTC string and both second and millisecond values. A date string works in the opposite direction, and an empty input returns the current moment — handy for checking API payloads, log lines and database timestamps.
🔒 Your file is processed locally in your browser whenever supported. This tool runs entirely on your device — nothing you type or upload is sent to a server, logged, or stored.
Values longer than 10 digits are treated as milliseconds; shorter values are multiplied by 1000. That covers today's 10-digit second and 13-digit millisecond timestamps in normal use.
ISO 8601 and the UTC string are timezone-independent. The tool does not print a local-time representation, so use the UTC values when comparing logs from different machines.
Date-only strings such as 2026-10-19 are parsed as UTC by the browser, while strings without a timezone may be read as local time. Include an explicit Z or offset when precision matters.
No. Parsing and formatting run locally in your browser.
| Platform | Supported | Offline | Local | Server | Network |
|---|---|---|---|---|---|
| WEB | Yes | Yes | Yes | No | Not required |
| PWA | Yes | Yes | Yes | No | Not required |
| ANDROID | Yes | Yes | Yes | No | Not required |
| IOS | Yes | Yes | Yes | No | Not required |
Count years, months, days and weeks between two dates.
Format a date in ISO, long, short and UTC styles.
Count down to any date and time, or from a number of seconds — free online timer.
Calculate exact age in years, months, and days.
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