About this tool
A timestamp converter turns Unix epoch numbers into readable dates and converts chosen dates back into timestamps. It automatically detects input expressed in seconds, milliseconds, or microseconds. Results include local time, UTC, ISO 8601, RFC 2822, and a relative phrase such as three hours ago.
All date calculations happen in your browser, with no timestamps uploaded or retained after the tab closes. Choose any IANA time zone to inspect the same instant under regional clock rules, or watch the live current epoch clock. Unix time counts from January 1, 1970 UTC and does not account for leap seconds.
How to use the Timestamp Converter
- 1Paste an epoch value in seconds, milliseconds, or microseconds.
- 2Confirm the automatically detected unit before reading the converted date.
- 3Select an IANA time zone for a regional date and time.
- 4Choose a calendar date when converting in the opposite direction.
- 5Copy the required local, UTC, ISO, RFC, or epoch value.
Features
Automatic unit detection
Recognize plausible epoch input in seconds, milliseconds, or microseconds without manual switching.
Five date presentations
Read local, UTC, ISO 8601, RFC 2822, and relative-time output together.
IANA zone selection
Display an instant using regional time-zone rules from the IANA database.
Reverse date conversion
Turn an entered calendar date and time back into a Unix timestamp.
Live epoch clock
Watch the current Unix epoch value update for quick reference and testing.
Frequently asked questions
How does the converter detect timestamp units?
It uses the scale of the number to identify likely seconds, milliseconds, or microseconds. Confirm the detected unit if your input represents an unusual date.
What does Unix time count from?
Unix time counts elapsed seconds from January 1, 1970 at 00:00:00 UTC. It ignores leap seconds.
Can one timestamp display in another time zone?
Yes. Select any available IANA time zone to show the same instant under that region's clock offset rules.
What is the difference between UTC and local output?
UTC uses the zero-offset global reference. Local output uses the time zone currently configured in your browser or device.
Are converted dates sent to a service?
No. Parsing, zone display, and reverse conversion are performed locally and no input is kept after the tab closes.