About the Unix Timestamp Converter
Tezmy's Unix Timestamp Converter shows the current Unix time live and converts in both directions. Paste a timestamp and it detects whether it's in seconds, milliseconds, microseconds or nanoseconds, then shows the date in your own time zone, in UTC and in ISO 8601, plus how long ago (or how far in the future) it is. Or pick a date and time to get its timestamp in seconds and milliseconds. It's handy for reading logs, debugging APIs and databases, and checking token expiry times.
Updated October 2026
How to use the Unix Timestamp Converter
- 1See the current Unix time at the top and copy it with one click.
- 2Paste a timestamp in the left box to see its date.
- 3Or pick a date and time on the right to get its timestamp.
- 4Copy the format you need: local, UTC, ISO 8601, seconds or milliseconds.
Unix time in simple words
A Unix timestamp counts the seconds since 1 January 1970 at midnight UTC, called the Unix epoch. For example, 1,700,000,000 is 14 November 2023. Computers love it because it's one simple number that means the same moment everywhere in the world.
Seconds, milliseconds and more
The converter detects which one you pasted automatically.
- 10 digits (like 1759000000): seconds, used by Unix, PHP and most databases.
- 13 digits: milliseconds, used by JavaScript and Java.
- 16 digits: microseconds; 19 digits: nanoseconds, used in some logs and Go.
Where you'll meet timestamps
- Server and app logs.
- Database fields like created_at.
- API responses and webhooks.
- Token expiry times (see the JWT Decoder).
- File metadata and analytics exports.
Time zones and the year 2038
A timestamp itself has no time zone; it's always UTC. The converter shows it in your local time, UTC and ISO 8601. Older systems that store it as a 32-bit number will overflow on 19 January 2038, which is why modern systems use 64-bit timestamps.
Convert timestamps on any device
Everything runs in your own browser, so nothing you paste is uploaded or logged. It works on phones, tablets and computers with nothing to install, and there's no sign-up. To count the days between two dates use Days Between Dates, and the UUID Generator makes unique IDs.
Features
- Live current Unix time
- Auto-detects seconds, ms, µs and ns
- Local time, UTC and ISO 8601
- Relative time (“3 days ago”)
- Date to timestamp
- Runs in your browser
Frequently asked questions
What is a Unix timestamp?
It's the number of seconds since 1 January 1970 at 00:00:00 UTC, called the Unix epoch. It's a simple, time-zone-free way computers store moments in time.
Is my timestamp in seconds or milliseconds?
Count the digits. Today's timestamps have 10 digits in seconds and 13 in milliseconds. JavaScript and Java use milliseconds; most databases, Unix tools and PHP use seconds. This tool detects it for you.
Does a Unix timestamp have a time zone?
No. A timestamp is always based on UTC. Only when it's displayed as a date does it get shown in a particular time zone.
What is the year 2038 problem?
Systems that store Unix time as a signed 32-bit number will overflow on 19 January 2038. Modern systems use 64-bit numbers, which last for billions of years.
What is ISO 8601?
An international date format like 2026-09-27T15:30:00.000Z. The Z means UTC. It sorts correctly as text and is widely used in APIs.
How do I get the current Unix timestamp?
It's shown live at the top of the page, in seconds and milliseconds, ready to copy.
How do I convert a date to a timestamp?
Pick the date and time in the second section to get its timestamp in seconds and milliseconds.
Is it free?
Yes. It runs in your browser with no sign-up.
What was the Unix timestamp 0?
0 is the Unix epoch: 1 January 1970 at 00:00:00 UTC.
Can I convert milliseconds from JavaScript?
Yes. Paste a 13-digit value from Date.now() and it's detected as milliseconds automatically.