Time Zone Converter

Compare a time across multiple cities and time zones.

Date and time

In this time zone

Add a zone to compare

Why zone names, not offsets

A zone such as America/New_York is UTC−5 in winter and UTC−4 in summer, and governments change the rules with little notice. Using the name means the correct offset is always resolved from your browser's IANA database.

What does Time Zone Converter do?

Convert a time between any IANA time zones and compare several cities side by side. Daylight saving is handled from the browser’s own zone database, so the answer is right even across transitions.

How to Use Time Zone Converter

1
Set the source time and zoneDefaults to now in your local zone.
2
Add the zones to compareSearch by city name.
3
Read the tableWorking hours are highlighted.

Key Features

Every IANA time zone, searchable by city or region
Compare several zones side by side for meeting planning
Correct daylight saving handling, including historical rules
UTC offset and abbreviation shown for each zone
Working-hours highlighting so you can see who is awake
Current time in each zone alongside the converted time

Frequently Asked Questions

How many time zones are there?

Thirty-eight distinct UTC offsets are in use, ranging from UTC−12 to UTC+14. Some are not whole hours — India is UTC+5:30, Nepal UTC+5:45 and Chatham Islands UTC+12:45.

Why use a zone name instead of an offset?

Because offsets change. "America/New_York" is UTC−5 in winter and UTC−4 in summer, and governments alter the rules with little notice. A zone name always resolves to the correct current offset.

How do I schedule a meeting across zones?

Pick a time in one zone, add the others, and look for the overlap where working hours are highlighted in all of them. Always state the zone explicitly in the invitation.