World Clock Calculator
Instantly convert time between any two time zones and see the current time in major cities around the world. Perfect for scheduling calls, meetings, and travel.
Convert Time Zones
Enter a date and time, choose the origin and destination time zones, and instantly see the converted local time — including whether it falls on a different day.
Time Zone Converter
Get instant conversions with automatic daylight saving adjustment.
Understanding Time Zones
Key concepts for accurate scheduling across the globe
UTC as the Reference
Coordinated Universal Time (UTC) is the baseline every time zone is measured against, expressed as an offset such as UTC+5:30 or UTC−8.
Daylight Saving Time
Many regions shift their clocks forward or back by an hour twice a year. This calculator applies each location’s actual DST rules automatically.
The International Date Line
Crossing this line can shift the calendar date by a full day, which is why a converted time can sometimes land on “yesterday” or “tomorrow.”
Half & Quarter-Hour Offsets
Not every time zone sits on the hour — places like India (UTC+5:30) and Nepal (UTC+5:45) use 30- or 45-minute offsets from UTC.
Live World Clock
The current local time in major cities across the world, updated every second.
Common Time Zone Offsets
Standard UTC offsets for major regions. Actual local time may shift by an hour where daylight saving time applies.
| Offset | Zone Name | Example Cities | Region |
|---|---|---|---|
| UTC−12:00 | Baker Island | Pacific | |
| UTC−08:00 (PST) | Los Angeles, Vancouver | North America | |
| UTC−05:00 (EST) | New York, Toronto, Bogotá | North / South America | |
| UTC±00:00 (GMT) | London, Lisbon, Accra | Europe / Africa | |
| UTC+01:00 (CET) | Paris, Berlin, Lagos | Europe / Africa | |
| UTC+03:00 | Moscow, Nairobi, Riyadh | Europe / Africa / Middle East | |
| UTC+05:00 | Islamabad, Karachi | South Asia | |
| UTC+05:30 (IST) | Mumbai, New Delhi | South Asia | |
| UTC+08:00 | Beijing, Singapore, Perth | East Asia / Oceania | |
| UTC+09:00 (JST) | Tokyo, Seoul | East Asia | |
| UTC+10:00 (AEST) | Sydney, Melbourne | Oceania | |
| UTC+12:00 | Auckland, Fiji | Pacific |
World Clock FAQ
Answers to the most frequently asked questions about time zone conversion and scheduling across the globe.
Select the date and time you want to convert, choose the origin time zone, then choose the destination time zone. The calculator automatically accounts for each region’s current UTC offset, including daylight saving time, and shows the converted local time along with any day change.
UTC (Coordinated Universal Time) is the modern time standard used worldwide, while GMT (Greenwich Mean Time) is a time zone historically used as the reference point. In practice, UTC and GMT share the same current time, but UTC does not observe daylight saving time, whereas GMT-based zones like the UK sometimes do.
Yes. The calculator uses each location’s official time zone rules, so it automatically adjusts for daylight saving time changes where they apply, giving you an accurate local time for any date you enter.
A good rule of thumb is to find overlapping business hours, typically between 9am and 5pm local time, across all participating time zones. Using a world clock calculator to compare several cities at once makes it easy to spot a convenient overlap window.
A handful of countries, including India, Iran, and Nepal, chose offsets that aren’t a whole number of hours from UTC for historical, geographic, or political reasons. These half- and quarter-hour offsets are fully supported by this calculator.