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Free Time Zone Converter & World Clock

Compare live times in 85+ cities, slide to any hour, and see who is inside working hours. Daylight saving handled for every city. Free, no signup.

Live World Clocks

Click the star button on any city card to set it as the primary base reference.

3/5 Cities Added

New York

UTC-4

Sunset
05:53PM
Thu, Oct 22

London

UTC+1

Night
10:53PM
Thu, Oct 22

Mumbai

UTC+5:30

Night
03:23AM
Fri, Oct 23

Drag to Shift Time

Shift hours to see daytime transitions and business openings worldwide.

Reference Anchor: New York

Meeting Overlap & Scheduler Helper

Longest shared window within 9 AM–5 PM in every city on the selected UTC date.

No Working Overlap
No overlapping business hours between these cities
00:00
03:00
06:00
09:00
12:00
15:00
18:00
21:00
New York
London
Mumbai
Local Business Hours (9am-5pm)
Overlapping Time Window

Open a pair in the converter, or go to its dedicated page with live clocks and overlap hours.

How to convert time zones without mistakes

  1. Pick the cities, not the abbreviationsSearch for the actual cities. “EST” is only correct in winter; a city always follows its own daylight-saving rules.
  2. Mind the half-hour zonesIndia (UTC+5:30), Nepal (UTC+5:45) and parts of Australia aren’t on whole hours. 9 AM in New York in winter is 7:30 PM in India.
  3. Watch the transition weeksThe US, UK and EU change clocks on different Sundays in March and October, so gaps shift by an hour for a week or two.
  4. Write times with a city“3 PM New York time” can’t be misread. Copy the times from the converter straight into your invite.

Questions

How does GlobalSync AI handle daylight saving time?

Every city uses the IANA time zone database built into your browser and operating system, the same source as Linux, macOS and most servers. Daylight-saving changes are applied on each region's official dates.

Is the time zone converter free?

Yes. The converter is free with no signup. Saved teams and invoice exports have separate limits shown in each tool.

How many cities and time zones are supported?

You can search and compare 85+ cities covering 60+ time zones, up to five at once.

Can I find a meeting time that works for everyone?

Yes. The Meeting Planner checks each city's working hours (9 AM to 5 PM by default, adjustable) and shows the shared windows, or tells you when there aren't any.

How accurate is the converter near daylight-saving changes?

It uses the time zone rules in your browser, which update with your browser and operating system. Keep them up to date and transitions are applied on the right day.