Unix Timestamp Converter
Convert Unix timestamps to readable dates and back. Watch the current timestamp tick live, and read any value in local time and UTC. Everything runs in your browser.
Date object. Nothing is uploaded or logged.About the Unix Timestamp Converter
The Unix Timestamp Converter turns Unix timestamps into readable dates and turns dates back into timestamps. A Unix timestamp is the number of seconds since January 1, 1970 at 00:00 UTC, a format used across databases, log files, APIs, and WordPress functions like time() and get_post_time(). The tool shows the current timestamp ticking live, reads any timestamp in your local time and in UTC, and gives you the seconds and milliseconds for any date you pick. Everything runs in your browser using the native Date object, so your values are never uploaded.
How it works
- Watch the current Unix timestamp at the top update every second, and use Copy to grab it.
- To read a timestamp, type or paste it and click Convert. The tool detects seconds versus milliseconds by digit count and shows the local time, UTC, and ISO 8601 value.
- To get a timestamp, pick a date and time, click Convert, and read the seconds and milliseconds, each with its own Copy button.
- Use the preset chips (Now, Epoch, 1 billion, 2038 limit) to fill common values fast.
Features
- Live current Unix timestamp that updates every second, with one-click copy.
- Auto-detection of seconds versus milliseconds based on the number of digits.
- Date output in local time, UTC, and ISO 8601 from a single timestamp.
- Date to timestamp conversion that returns both seconds and milliseconds.
- Preset values for the epoch, one billion seconds, and the 2038 limit, plus clear messages for invalid input.
Frequently asked questions
Is my data uploaded anywhere?
No. All conversions run in your browser using the native Date object. Nothing is sent to a server or logged.
How does it tell seconds from milliseconds?
It counts the digits in your input. A value with 12 or more digits is read as milliseconds, and a shorter value is read as seconds. The Detected row shows which unit was used so you can confirm it.
Which timezone does the date to timestamp section use?
The date and time you pick are read in your computer's local timezone. The resulting Unix timestamp is an absolute point in time, so it is the same number for everyone regardless of timezone.
What is the 2038 limit?
The value 2147483647 is the largest number a signed 32-bit integer can hold. As a Unix timestamp it falls on January 19, 2038. After that moment, systems that store timestamps in 32 bits overflow. Modern 64-bit systems are not affected.
Why does my timestamp show an unexpected date?
The most common cause is a unit mismatch. A value in milliseconds entered as if it were seconds lands far in the future, and the reverse lands near 1970. Check the Detected row, and add or remove three digits if the unit is wrong.