Timestamp Converter
Convert epoch seconds, epoch milliseconds, or ISO 8601 timestamps to all common representations.
About Timestamp Converter
Timestamp Converter takes an epoch value or ISO 8601 string and expands it into every common representation at once. It's the quick check you reach for when a log line shows a raw Unix timestamp and you need a human-readable date, or vice versa. The conversion runs in your browser, so nothing you paste is sent anywhere.
- Category
- inspect
- Input
- Accepts: text/plain.
- Output
- Outputs: application/json.
- Cost
- Free, runs in your browser
- Memory
- low
Common uses
- Decode a Unix timestamp from a log or database row into a readable date and time
- Tell whether a numeric timestamp is in seconds or milliseconds and convert accordingly
- Convert an ISO 8601 string from an API response into epoch seconds for a query
- Cross-check a JWT exp or iat claim against the actual date it represents
- Translate a timestamp into UTC and local representations to debug a timezone bug
- Get the current epoch value to hardcode into a test fixture
Frequently asked questions
What inputs does it accept?
Epoch seconds, epoch milliseconds, or an ISO 8601 timestamp. Paste any one and it returns all the common forms.
How does it tell seconds from milliseconds?
It interprets the magnitude of the number, since millisecond timestamps are three orders larger than second timestamps for present-day dates.
What's in the output?
A JSON object with the common representations, typically including epoch seconds, epoch milliseconds, ISO 8601, and human-readable UTC and local forms.
Is my timestamp uploaded?
No. The conversion is pure math done in your browser, so nothing is transmitted to any server.
Does it handle timezones?
It surfaces both UTC and your local representation. Epoch values are inherently UTC-based, and the local form reflects your browser's timezone.
Keywords
- timestamp
- epoch
- unix
- date
- time
- convert
- iso8601