Unix timestamp converter
Convert Unix time to ISO 8601 and local date-time in your browser. Nothing is uploaded.
Fill one field, then Convert. Values over 1e12 are treated as milliseconds.
How to use the Unix timestamp converter
- Paste seconds (or tick milliseconds). Values over 1e12 are treated as milliseconds.
- Click Convert, or Now for this browser’s clock.
- Copy the ISO 8601 UTC value.
Seconds vs ms
JavaScript Date uses milliseconds. Unix logs are often seconds. This page shows both. Local uses the timezone in this browser, not a zone you type. Pair ISO 8601 when an API wants 2024-08-27T00:00:00Z.
Nothing is uploaded
Conversion is local.
Unix timestamp converter FAQ
Leap seconds?
Unix time ignores them, like most converters.
Negative epochs?
Yes, dates before 1970.