Unix Time Converter
Convert Unix timestamps to human-readable dates and vice versa — in UTC, ISO 8601, and local time.
Reviewed October 7, 2026 Runs in your browser — inputs are never stored
Current Unix time: …
This tool provides general unit conversions for everyday and educational use. For regulated, legal, or scientific applications, verify conversion factors against the applicable official standard.
About the Unix Time Converter
The Unix time converter turns Unix timestamps — the number of seconds since 00:00:00 UTC on 1 January 1970 — into readable dates in UTC, ISO 8601 and your local time, and converts dates back into timestamps. Unix time is used by operating systems, databases, log files and APIs.
How to use it
- 1Choose Unix → date or date → Unix.
- 2Enter the timestamp or pick a date and time; press “Now” for the current time.
- 3Read the result in UTC, ISO 8601 and local time.
- 4Copy, share or print the result with the buttons below it.
Worked example
the timestamp 1,700,000,000 corresponds to 14 November 2023 at 22:13:20 UTC.
How it works
What is Unix time?
Unix time (also POSIX time or epoch time) counts the number of seconds since January 1, 1970 00:00:00 UTC. It is used in virtually all operating systems, databases, and APIs.
Formula
Date = new Date(unixTimestamp × 1000) (multiply by 1000 to convert seconds to milliseconds for JavaScript).
Common use cases
- Reading timestamps in logs and databases
- Debugging APIs
- Converting dates for programming
Frequently asked questions
A:Unix timestamp 0 = January 1, 1970, 00:00:00 UTC (the Unix epoch).
A:32-bit Unix timestamps overflow on January 19, 2038. Systems using 64-bit timestamps are not affected.
Reviewed for accuracy · Last updated October 7, 2026
Conversion factors are based on internationally defined SI units and standard metric/imperial equivalence tables.
CalcWisee Editorial Team
Calculator development and formula review
CalcWisee is an independent site founded by Ayman. Every calculator is built from a published formula or official definition, tested against hand-worked examples before it goes live, and corrected promptly when a reader reports an issue to ayman@calcwisee.com.
Expertise: Financial mathematics, Health and fitness formulas, Applied mathematics, Unit conversion standards
References & sources
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