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Timezone Converter – World Clock & Time Zone Calculator
Convert time between 30+ cities worldwide with our interactive draggable interface. Perfect for scheduling international meetings, coordinating global teams, and tracking time differences across the planet.
World Clock & Timezone Converter
Drag any time to instantly update all timezones
Why Choose Our Timezone Converter?
Drag & Drop Interface
Simply drag time in any timezone to instantly update all others. No complex calculations needed.
30+ Timezones
Support for major cities and timezones across all continents. Add custom timezones as needed.
Mobile Optimized
Touch-friendly interface designed for phones and tablets. Works great on all devices.
Real-time Sync
All timezone displays update instantly when you drag time in any timezone.
Auto-detect Local Time
Automatically detects your browser's timezone and sets it as the primary reference.
Beautiful Interface
Clean, intuitive design with smooth animations and visual feedback.
How to Use the Timezone Converter
View Current Times
The converter automatically shows your local time and UTC by default.
Add Timezones
Click "Add Timezone" to include more cities and regions in your comparison.
Drag to Adjust
Drag time left or right in any timezone box to adjust the time. All others update instantly!
Schedule Meetings
Find the perfect time for global meetings where everyone is available.
Frequently Asked Questions
How does the drag interface work?
The drag interface allows you to adjust time by dragging horizontally on any time display. As you drag, all other timezones update in real-time to show the corresponding time in their respective zones.
Can I add my own timezone?
Yes! Click "Add Timezone" to browse and select from 30+ predefined timezones covering major cities worldwide. Each timezone includes accurate offset information.
Is my data saved?
The timezone converter works entirely in your browser. Your selected timezones and settings are saved locally but are not stored on any server.
Does it handle daylight saving time?
The converter uses standard timezone offsets and does not automatically adjust for daylight saving time changes. Always verify critical timing with official sources.
Understanding Time Zones
Time zones are regions of the Earth that have the same standard time. They're divided by imaginary lines called meridians, with each zone typically spanning 15 degrees of longitude (representing one hour of time difference).
The world is divided into 24 major time zones, each separated by one hour. However, some countries have created their own time zones that don't follow the standard 15-degree rule, leading to more than 24 actual time zones worldwide.
UTC vs GMT: What's the Difference?
🕐 GMT (Greenwich Mean Time)
- Based on Earth's rotation
- Used as reference point
- Can vary slightly due to Earth's irregular rotation
- Used in some countries as standard time
🌍 UTC (Coordinated Universal Time)
- Based on atomic clocks
- More precise and stable
- International standard for timekeeping
- Used worldwide for technical and scientific purposes
UTC is the modern successor to GMT. While GMT was based on Earth's rotation, UTC uses highly precise atomic clocks. For most practical purposes, UTC and GMT are the same, but UTC is preferred for scientific and technical applications because it's more accurate.
Common Timezone Conversions
🇺🇸 US Business Hours
🇪🇺 European Working Hours
🌏 Global Tech Companies
Planning International Meetings
Scheduling meetings across time zones can be challenging. Our timezone converter helps you find the perfect meeting time that works for everyone involved.
🎯 Best Practices
- Consider everyone's working hours (typically 9 AM - 5 PM local time)
- Avoid scheduling meetings too early or too late in any timezone
- Rotate meeting times to share the inconvenience equally
- Use video conferencing tools that show local times for participants
⏰ Time Zone Math
- East of GMT: Positive offset (e.g., IST is GMT+5:30)
- West of GMT: Negative offset (e.g., EST is GMT-5)
- Cross International Date Line: Date changes
- Daylight Saving Time: Can add/subtract one hour
Who Benefits from Timezone Converter?
💼 Business Professionals
Schedule international meetings, calls, and deadlines across global teams.
🌍 Remote Workers
Coordinate with colleagues and clients in different countries and time zones.
🎓 Students
Plan study sessions and assignments with classmates in different locations.
📞 Customer Support
Handle customer queries across different time zones and regions.
✈️ Travelers
Calculate time differences and plan itineraries for international travel.
🎬 Content Creators
Schedule social media posts and live streams for global audiences.
Why Choose Our Timezone Converter?
🎯 Intuitive Interface
Drag-and-drop interface makes time conversion effortless and fun to use.
🌍 Comprehensive Coverage
30+ major cities and timezones covering all continents and regions.
⚡ Real-time Updates
All timezone displays update instantly when you adjust time in any zone.
📱 Mobile Optimized
Touch-friendly interface works perfectly on phones, tablets, and desktops.
🔒 Privacy Focused
No data collection or storage. Everything works in your browser locally.
🎨 Beautiful Design
Clean, modern interface with smooth animations and visual feedback.
Frequently Asked Questions About Timezone Converter
How many timezones can I add?
You can add up to 10 different timezones simultaneously. Each timezone shows the corresponding time for easy comparison. Remove unwanted timezones by clicking the X button next to each timezone display.
Does it work offline?
The timezone converter requires an internet connection for initial loading, but once loaded, it works offline. Timezone data is cached in your browser for reliable offline functionality.
How accurate is the time display?
The converter uses your device's system time as the reference point. Timezone conversions are mathematically accurate based on standard timezone offsets. For critical timing, always verify with official time sources.
What about daylight saving time?
The converter uses standard timezone offsets and doesn't automatically adjust for daylight saving time changes. During DST periods, you may need to manually adjust for the one-hour difference in affected regions.
Can I save my timezone preferences?
Yes! Your selected timezones are automatically saved in your browser's local storage. The next time you visit, you'll see your preferred timezone configuration restored automatically.
How do I find the best meeting time?
Look for overlapping working hours across all timezones. Generally, aim for 9 AM - 5 PM local time in each timezone. Use the drag interface to find a time that works for everyone without being too early or too late for anyone.
What time format is used?
The converter uses 12-hour format (AM/PM) by default, which is more intuitive for most users. Timezone abbreviations (like IST, EST, PST) help identify different regions quickly and accurately.
Can I use this for flight planning?
While useful for basic time calculations, this tool is designed for meeting planning rather than flight scheduling. For travel planning, consider using dedicated flight planning tools that account for flight durations and layovers.