Unix Timestamp Converter

Convert Unix epoch seconds or milliseconds to a human date and back, in any timezone.

1790687010
Epoch (seconds)1790687010
Epoch (milliseconds)1790687010000
ISO 8601 (UTC)2026-09-29T13:03:30.000Z
Human (UTC)Tuesday, 29 September 2026 at 13:03:30 UTC
Relative0 seconds ago
Day of weekTuesday

About Unix Timestamp Converter

Convert Unix epoch seconds or milliseconds to a human date and back, in any timezone.

Unix Timestamp Converter does calendar-aware date and time math for you, handling leap years and variable month lengths so the numbers you get are correct.

How to Use Unix Timestamp Converter

  1. Enter the date, time or duration values requested.
  2. Choose any options such as format or inclusive counting.
  3. The result appears instantly.
  4. Copy the output if you need to keep it.

Key Features

  • Calendar-accurate results, including leap years.
  • Instant answers with a clear, readable format.
  • No timezone setup required for everyday date math.

Frequently Asked Questions

Does Unix Timestamp Converter account for leap years?

Yes. Date and time calculations account for leap years and the differing lengths of months, so durations and differences are accurate.

Is Unix Timestamp Converter free to use?

Yes. Unix Timestamp Converter is completely free with unlimited use — no account, download or payment required.

Is my data uploaded to a server?

No. Unix Timestamp Converter runs entirely in your browser. Your inputs are never sent to our servers or stored anywhere.

Does Unix Timestamp Converter work on mobile?

Yes. The interface is fully responsive and works in any modern browser on Android, iPhone, tablets and desktops.

Related Time Tools

Browse all 17 Time Tools →