Unix timestamp converter
Input
Showing current time. Type to convert a specific value.
Unix epoch (seconds)
ISO 8601 (UTC)
UTC string
Time in UTC
What this time tool does
This page converts between Unix timestamps and human-readable dates entirely in your browser. Paste an epoch value, an ISO 8601 string, or any date your browser can parse, and see the result in UTC, RFC 3339, and a chosen timezone.
If you searched for terms like Unix timestamp, epoch converter, timestamp to date, or ISO 8601 converter, this tool is built to give you a fast answer with a simple interface and no server round trip.
What is a Unix timestamp
A Unix timestamp is the number of seconds that have passed since 1970-01-01 00:00:00 UTC, called the Unix epoch. It is a compact way to represent a moment in time without depending on a particular timezone. Some systems store timestamps in milliseconds rather than seconds.
Seconds versus milliseconds
Many backends store Unix timestamps in seconds, while JavaScript and most browser APIs use milliseconds. This tool detects the unit by length: integers with 13 or more digits are read as milliseconds, and shorter integers are read as seconds. You can also pick the unit explicitly when generating the current time.
Common time formats
The same moment in time can be written in several different formats. The table below shows the same instant rendered in the formats this tool produces.
| Format | Example |
|---|---|
| Unix epoch (seconds) | 1714560000 |
| Unix epoch (milliseconds) | 1714560000000 |
| ISO 8601 (UTC) | 2024-05-01T08:00:00.000Z |
| RFC 3339 | 2024-05-01T08:00:00.000+00:00 |
| UTC string | Wed, 01 May 2024 08:00:00 GMT |
Timezone display
UTC is the safest format to store and exchange between systems, but humans usually want to see times in their own timezone. This tool detects your local timezone on first load and lets you switch to common timezones such as America/Los_Angeles, Europe/London, Asia/Seoul, and Asia/Tokyo.
Common time tool use cases
A Unix timestamp converter is useful in many situations during development and operations.
- Reading
iatandexpvalues from a JWT - Inspecting timestamps in API logs and database rows
- Coordinating release windows across timezones
- Converting cron schedules and scheduled job times