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Unix Timestamp Converter

Convert Unix timestamps to human dates and back.

Current Unix time

1794587580

Timestamp to date

Read as seconds since 1 January 1970 (UTC).

Your time
Friday, November 13, 2026 at 4:33:00 PM UTC
UTC
Fri, 13 Nov 2026 16:33:00 GMT
ISO 8601
2026-11-13T16:33:00.000Z
Relative
now
Seconds
1794587580
Milliseconds
1794587580000

Date to timestamp

Time zone
Seconds
1794587580
Milliseconds
1794587580000
ISO 8601
2026-11-13T16:33:00.000Z

When to use it

Use this tool to turn a Unix timestamp into a readable date, or a date into a timestamp. Developers see timestamps in logs, databases, APIs, cookies and JSON Web Tokens. Being able to read them quickly helps when debugging, checking when something happened, or setting an expiry time.

How to use it

The top of the tool shows the Current Unix time, updating every second, with a Copy button.

Timestamp to date

  1. Paste a number into Unix timestamp. Seconds or milliseconds are detected automatically.
  2. Read the results: Your time, UTC, ISO 8601, Relative (such as 3 days ago), Seconds and Milliseconds.
  3. Click the copy button next to any line.

Date to timestamp

  1. Choose a Date and Time.
  2. Under Time zone, choose My local time or UTC.
  3. Read the Seconds, Milliseconds and ISO 8601 values.

Worked example

A log line shows 1767225600. Paste it in and the UTC line reads Thu, 01 Jan 2026 00:00:00 GMT, midnight on New Year’s Day 2026. The Your time line shows the same moment in your own time zone, so in New York it would be the evening of 31 December 2025.

Now you need a timestamp for an offer that ends at 09:00 UTC on 1 March 2027. Choose that date and time, select UTC, and the seconds value is 1803891600. Add three zeros for milliseconds: 1803891600000.

Where you will see timestamps

  • Logs and databases: created and updated times are often stored as seconds or milliseconds.
  • APIs: many return times as numbers in JSON.
  • JSON Web Tokens: the exp and iat fields are timestamps in seconds.
  • JavaScript: Date.now() returns milliseconds.

Tips

  • Store times in UTC. Convert to local time only when showing it to people.
  • Check the digit count. A 13-digit value is milliseconds. Dividing by 1,000 gives seconds.
  • Compare two events quickly. Subtract one timestamp from another to get the seconds between them, then divide by 86,400 for days.
  • Use ISO 8601 for readable data. Text like 2026-01-01T00:00:00.000Z is clear to people and to most software.

Common mistakes

  • Mixing up seconds and milliseconds. A seconds value read as milliseconds lands in January 1970.
  • Forgetting the time zone when converting a date. 09:00 local time and 09:00 UTC give different timestamps unless you live in UTC.
  • Using the relative time for records. “3 days ago” changes every day. Store the exact value.

Frequently asked questions

What is a Unix timestamp?

It is the number of seconds since 00:00:00 UTC on 1 January 1970, a moment called the Unix epoch. Computers use it because a single number is easy to store, compare and sort, and it means the same moment everywhere in the world.

How does the tool know if it is seconds or milliseconds?

By the number of digits. Current timestamps in seconds have 10 digits, and in milliseconds 13. The hint under the box tells you how your number was read.

Does a timestamp have a time zone?

No. A timestamp is the same everywhere. The time zone only matters when you show it as a date, which is why the tool shows both your local time and UTC.

What is the year 2038 problem?

Older systems store timestamps as 32-bit numbers, which run out on 19 January 2038. Modern systems use 64-bit numbers, which last far longer. This tool handles dates well beyond 2038.

Can I enter dates before 1970?

Yes. Dates before 1970 have negative timestamps. Type a minus sign before the number, or pick an early date in Date to timestamp.

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