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Convert Unix timestamps in seconds or milliseconds to UTC and local dates, and dates back to timestamps, in your browser.
You choose the unit, so a 10-digit and a 13-digit timestamp are never confused.
See the ISO 8601 UTC time, the UTC string, and your local time with its time zone.
Convert a date and time to a timestamp, reading it as your local time or as UTC.
Fill in the current timestamp or date with one click. There is no background clock.
When you use Unix Timestamp Converter, your data never leaves your browser. All transformations execute in-memory on your local machine with zero server uploads. Web assets are downloaded to run the tool, but your input data is never transmitted.
No. Everything is computed in your browser. The page does download the code needed to run the tool.
Current Unix timestamps have 10 digits in seconds and 13 in milliseconds. This tool does not guess: pick the unit yourself and the result updates.
Yes, within the range JavaScript dates support: about 275,760 years either side of 1970. A negative timestamp is a date before 1970.
You choose. The default reads it as your browser's local time zone, which is shown next to the option, and the other choice reads it as UTC. Seconds are rounded down.
Convert integers between binary, octal, decimal, and hexadecimal in your browser, exactly, even for numbers beyond 2^53.
Convert a JSON array of objects to CSV, or CSV back to JSON, in your browser. Quoted fields, commas, and line breaks are handled correctly.
Seconds or milliseconds since 1970-01-01 00:00:00 UTC. The unit is never guessed, so choose it. Negative values are dates before 1970.
The date and time you pick is read as your local time, as chosen above. Seconds are rounded down. Processed locally in your browser.