UTC

About this page

UTC (Coordinated Universal Time) is the global reference time. Every time zone is defined as an offset from it, such as UTC+08:00 for Singapore or UTC−05:00 for New York in winter. This page shows the current UTC time live, together with the same instant as a Unix timestamp and in ISO 8601 format, so you can copy whichever form you need.

Use the button below the clock to lock the current moment on time.foo and share it as a short link.

Frequently asked questions

What is the difference between UTC and GMT?

For everyday use they show the same clock time. GMT is a time zone used by the UK in winter, while UTC is the atomic-clock based standard that time zones are defined from.

Does UTC change for daylight saving time?

No. UTC never observes daylight saving time; only local time zones change their offset from UTC.

How does UTC relate to Unix time?

A Unix timestamp counts the seconds elapsed since 1970-01-01 00:00:00 UTC, so it is always tied to UTC and independent of your time zone.

How do I write UTC time in ISO 8601?

Add a Z or +00:00 after the time, for example 2026-11-04T08:30:00Z.