Current World Clocks
Date & Time to convert
From Timezone
→
To Timezone
Result
Converted time appears here…
What This Tool Does
Converts any date and time between 40 major world timezones using the browser's native Intl.DateTimeFormat API with IANA timezone identifiers. Daylight Saving Time is automatically handled. Live world clocks for 8 major cities are displayed at the top, ticking every second.
Frequently Asked Questions
What timezone data does this tool use?
The tool uses the browser's built-in Intl.DateTimeFormat API with IANA timezone identifiers (like "America/New_York"). This means it automatically accounts for Daylight Saving Time rules for each timezone, using the data built into your browser.
What is UTC?
UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks. It does not change for Daylight Saving Time, making it the stable reference point that all other timezones offset from.
What is the difference between GMT and UTC?
For most practical purposes they are the same — both refer to the time at 0° longitude. Technically UTC is an atomic time standard while GMT is a timezone, but the difference is less than 1 second and irrelevant for everyday use.