Time Zone Converter — World Clock & Time Difference Calculator
Free time zone converter with automatic DST support. Convert time between any cities or UTC offsets worldwide.
Convert Time
World Clocks
How to Use the Time Zone Converter
Our free time zone converter makes it easy to find the exact time in any location worldwide, with automatic Daylight Saving Time detection.
Quick Start Guide:
- 1 Select the date and time you want to convert
- 2 Choose the source time zone (From)
- 3 Choose the target time zone (To)
- 4 Click Convert to see the result instantly
- 5 Add world clocks to compare multiple zones
Perfect For:
- Scheduling international meetings and calls
- Planning travel across time zones
- Remote teams coordinating work hours
- Converting UTC timestamps to local time
- Finding the best overlap for global collaboration
Understanding Time Zones & DST
Essential knowledge for accurate time zone conversions worldwide.
What is UTC?
Daylight Saving Time
Time Zone Offsets
Popular Time Zone Conversions
Eastern → Pacific
-3 hours
Eastern → Greenwich
+5 hours
Pacific → India
+13:30 hours
Greenwich → Japan
+9 hours
Eastern → Central EU
+6 hours
Pacific → Sydney
+18/+19 hours
Note: Time differences may vary by ±1 hour during DST transition periods. Always verify with this converter for a specific date.
Frequently Asked Questions
How does this time zone converter handle Daylight Saving Time?
Our converter uses the browser's built-in Intl API which automatically accounts for DST changes. When you select a date, it shows the correct offset for that specific date, including any DST transitions.
How do I convert time between two cities?
Select your source city/timezone from the "From" dropdown, enter the time and date, then select the target timezone in the "To" dropdown. Click Convert and the result appears instantly with DST accounted for.
Can I compare multiple time zones at once?
Yes! Use the World Clocks section to add multiple time zones. They all update in real-time, and the 24-hour comparison grid helps you find overlapping working hours for meetings.
What is the difference between GMT and UTC?
GMT (Greenwich Mean Time) is a time zone, while UTC (Coordinated Universal Time) is a time standard. They show the same time, but UTC is more precise as it's based on atomic clocks. UTC doesn't observe DST.
Is this time zone converter free?
Yes! This tool is completely free with no signup required. Convert unlimited times across any time zones worldwide at no cost.