World Time Zone Calculator

Convert time between cities, calculate time differences, and schedule global meetings instantly. Our free time zone converter makes international time coordination simple and accurate.

100% Free to Use
Accurate & Reliable
Secure & Private

Global Time Zone Insights

Visualize time differences and global time distribution with our interactive charts

Time Difference Comparison

Global Time Distribution

Daily Time Progression

Why Use Our Time Zone Calculator?

Discover the benefits of our powerful time conversion tool

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Global Coverage

Access time data for every country and major city worldwide with our comprehensive database.

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Real-Time Accuracy

Get precise calculations that account for daylight saving time changes and regional variations.

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Date & Time Support

Convert both time and date simultaneously for accurate scheduling across time zones.

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Meeting Planner

Find the perfect meeting time for participants in different time zones with our visual scheduler.

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Visual Insights

Understand time differences at a glance with our interactive charts and visualizations.

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Privacy Focused

Your data stays on your device - we don't track or store your time conversion activities.

Frequently Asked Questions

Find answers to common questions about time zone conversion

How does the time zone calculator work? +

Our time zone calculator uses the IANA Time Zone Database to accurately convert times between different time zones. Simply select your starting time zone, destination time zone, enter the date and time, and we'll instantly calculate the converted time along with the time difference.

Does the calculator account for daylight saving time? +

Yes, our calculator automatically adjusts for daylight saving time (DST) based on the selected date and location. The system uses up-to-date DST rules for each region to ensure accurate time conversions throughout the year.

Can I compare multiple time zones at once? +

Absolutely! Our tool allows you to compare multiple time zones simultaneously. After your initial calculation, you can add additional locations to see how the time compares across several cities or countries at once.

How accurate is the time difference calculation? +

Our calculations are highly accurate, using the official IANA time zone database that powers operating systems and programming languages worldwide. We update our system regularly to account for any changes in time zone rules or daylight saving time adjustments.

Can I use this for scheduling international meetings? +

Yes, our tool is perfect for scheduling international meetings. You can input your preferred meeting time and see what time that would be in other participants' time zones. We also show the current local times to help you find a time that works for everyone.

Is there a limit to how many conversions I can do? +

No, our time zone calculator is completely free to use with no limitations. You can perform as many conversions as you need, whenever you need them, without any registration or subscription required.

Time Zone Insights & Tips

Read our comprehensive guide to mastering time zone conversions

The Complete Guide to Time Zone Conversion

Navigating time zones is essential in our interconnected world. Whether you're scheduling international business meetings, planning travel, or connecting with loved ones abroad, understanding time differences is crucial. This comprehensive guide covers everything you need to know about time zones and how to convert between them effectively.

Time zones were established to standardize time across regions based on longitude. The world is divided into 24 time zones, each approximately 15 degrees of longitude wide, with variations to accommodate political and geographical boundaries. The prime meridian (0° longitude) in Greenwich, England, serves as the reference point for Coordinated Universal Time (UTC).

Daylight Saving Time (DST) adds complexity to time zone calculations. Many regions adjust their clocks forward by one hour during summer months to extend evening daylight. However, DST practices vary globally—some countries don't observe it at all, while others have different start and end dates. Our calculator automatically accounts for these variations based on your selected date and location.

When converting time for international meetings, consider working hours in each location. Our meeting planner feature helps identify overlapping business hours across time zones. For critical events like webinars or global launches, always double-check time conversions and clearly specify time zones (e.g., "3 PM EST" rather than just "3 PM") to avoid confusion.

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