Web Dev Helpers

Timestamp Converter

Convert between Unix timestamps and human dates.

Right now

Unix seconds

1778775501

Unix milliseconds

1778775501931

ISO 8601 (UTC)

2026-05-14T16:18:21.931Z

Epoch → date

Date → epoch

About this tool

Paste a Unix epoch (seconds or milliseconds) to see the date in your local timezone and UTC. Or pick a date to get the Unix timestamp.

FAQs

Seconds or milliseconds?

JavaScript and most APIs use milliseconds (13 digits). Unix command line tools use seconds (10 digits). The tool detects automatically.

What timezone is shown?

Both your local timezone and UTC, side by side.

Does it handle dates before 1970?

Yes - negative epochs work, going back to roughly the year 100,000 BC in JS Date.

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