Timestamp Converter
Convert between Unix timestamps and dates
—
—
—
—
—
—
—
—
—
—
0
946684800
1000000000
1704067200
1735689600
2147483647
What is Timestamp Converter?
The Timestamp Converter is a free online tool that translates between Unix timestamps and human-readable dates in both directions. A Unix timestamp is the number of seconds that have elapsed since the Unix epoch, midnight UTC on January 1, 1970 — a compact, timezone-neutral way to store moments in time that appears throughout APIs, log files, and databases. This tool converts a timestamp into a readable date, turns a chosen date and time back into a timestamp, and supports four input precisions: seconds, milliseconds, microseconds, and nanoseconds. An auto-detect mode reads the magnitude of your value and picks the right precision for you, so a thirteen-digit millisecond value or a nineteen-digit nanosecond value lands on the correct instant rather than thousands of years away. Each conversion is presented across more than eight output formats — ISO 8601 in UTC and local time, an RFC 2822 string, full UTC and local strings, date-only and time-only views, the day of the week, a relative description such as "3 hours ago", and the raw Unix value in seconds and milliseconds. It offers a one-click button for the current time and sixteen quick presets. Everything runs in your browser.
How to use Timestamp Converter?
Converting a moment in time takes only a few seconds and happens entirely in your browser:
-
1
Enter a Unix timestamp such as
1700000000, or pick a date and time using the date fields. Leave the unit selector on auto-detect, or choose seconds, milliseconds, microseconds, or nanoseconds explicitly. - 2 View every format instantly. A timestamp is expanded into ISO 8601 (UTC and local), RFC 2822, UTC and local strings, date-only and time-only values, the weekday, a relative time, and the raw Unix seconds and milliseconds.
- 3 Use the Now button for the current timestamp, or pick from sixteen presets — relative ones such as start of today, start of this hour, plus or minus a day or week, and start of the month or year, plus fixed epochs like the Unix epoch, Y2K, the billennium, and the year-2038 32-bit limit.
-
4
Copy exactly what you need — the Unix value, the
ISO 8601string, or a localized date — to your clipboard, ready for an API request, a log entry, or a database field.
Why use this tool?
Timestamps are everywhere in software, yet a raw number like 1700000000 means nothing at a glance, and getting the precision, conversion, or timezone wrong leads to bugs that are painful to track down. Being able to translate instantly in both directions is invaluable when debugging API responses, reading server logs, inspecting database records, or scheduling future events. Supporting seconds, milliseconds, microseconds, and nanoseconds — with automatic detection by digit length — avoids the classic off-by-a-thousand mistake, and showing the same instant in ISO 8601, RFC 2822, UTC, local, and relative forms prevents confusion about when something really happened. The relative presets make it easy to grab boundaries like the start of today or one week ago without doing date math by hand. Because the tool runs entirely in your browser with no signup, you can convert as many timestamps as you like, instantly and privately.
Examples
Paste a value like 1700000000 from a JSON response and instantly see it as 2023-11-14T22:13:20Z in UTC, confirming exactly when the event occurred.
Pick the start-of-today or start-of-month preset to get its Unix timestamp, then use that value as the boundary in a database query or API filter.
Drop in a 13-digit millisecond or 19-digit nanosecond value and let auto-detect recognize the precision, avoiding the common mistake of treating it as seconds and landing thousands of years in the future.
Frequently Asked Questions
Is the Timestamp Converter free to use?
Yes. The tool is completely free, with no signup, no limits, and no account required. You can convert as many timestamps as you like.
What is a Unix timestamp?
It is the number of seconds elapsed since the Unix epoch, which is midnight UTC on January 1, 1970. It provides a compact, timezone-neutral way to represent a moment in time.
Which precisions does the tool support?
Seconds, milliseconds, microseconds, and nanoseconds. Auto-detect chooses the right one from the number of digits: about ten for seconds, thirteen for milliseconds, sixteen for microseconds, and nineteen for nanoseconds. You can also pick the precision manually.
What output formats do I get?
More than eight: ISO 8601 in UTC and local time, an RFC 2822 string, full UTC and local strings, date-only and time-only views, the day of the week, a relative description, and the raw Unix value in both seconds and milliseconds.
What is the year 2038 problem?
Systems that store timestamps in a signed 32-bit integer run out of room in January 2038. The tool includes that limit as a preset so you can see exactly when it occurs.
Is my data sent to a server?
No. All conversions happen entirely in your browser, so nothing you enter is uploaded or stored anywhere.
Related Tools
Explore more free tools you might find useful