How to Convert Unix Timestamps to Human-Readable Dates

Unix timestamps are everywhere in programming: API responses, database records, log files, and cookie expirations. A timestamp like 1749937000 is precise and unambiguous to a computer, but meaningless to a human. Converting between timestamps and readable dates is a daily task for developers, and a bidirectional converter makes it instant.

What is a Unix timestamp?

A Unix timestamp counts seconds since January 1, 1970, at 00:00:00 UTC — the Unix epoch. It ignores time zones and leap seconds, which makes it ideal for storing time in databases and APIs. The ToolStand Unix Timestamp Converter works bidirectionally: paste a timestamp and see the date in your local timezone, or pick a date and get the corresponding timestamp.

Common timestamp formats

Not all timestamps are in seconds. JavaScript uses milliseconds (multiply by 1,000). Some systems use microseconds. The converter handles all three — just toggle the unit and the output updates. It also shows the ISO 8601 format, UTC time, and your local time simultaneously, so you do not have to do mental timezone math.

Pitfalls to avoid

The year 2038 problem. 32-bit systems that store timestamps as signed integers will overflow on January 19, 2038. If you are working with legacy systems, check whether they use 32-bit or 64-bit timestamps. Timezone confusion. A Unix timestamp is always UTC. Converting it to a local time requires knowing the correct offset, which the converter handles automatically using your browser timezone settings.

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