What's the difference between UTC and GMT?

UTC (Coordinated Universal Time) is the primary time standard worldwide. GMT (Greenwich Mean Time) is a time zone that's often used interchangeably with UTC, but technically GMT can vary slightly due to Earth's irregular rotation.

How do I convert time between time zones?

Select your source time zone and target time zone, then enter the time. Our converter automatically calculates the difference and shows the result in real-time with visual indicators for day/night.

What are daylight saving time adjustments?

Daylight Saving Time (DST) is the practice of setting clocks forward by one hour during warmer months to extend evening daylight. Our converter automatically adjusts for DST when applicable.

How accurate is the time zone database?

We use the IANA Time Zone Database, which is the most comprehensive and accurate source for global time zone information, including historical changes and DST rules.

Can I calculate time differences between dates?

Yes! Use our Date Difference calculator to find the exact duration between two dates in years, months, days, hours, minutes, and seconds.

What's the purpose of the World Clock view?

The World Clock shows current times in multiple cities simultaneously, making it easy to coordinate across time zones at a glance.

Advanced Time Calculator & Converter

Free Online Time Converter

Master time management with our comprehensive time converter featuring real-time time zone conversion, interactive countdown timers, global world clock, date difference calculator, and time arithmetic operations. Compare historical times, visualize day/night cycles, benefit from automatic DST adjustments, convert multiple time units, and track progress with visual indicators—essential for global teams, travelers, project planning, and international scheduling.

Advanced Time Converter

Convert between time units, time zones, calculate differences, and explore unique time-related features

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Conversion Result

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Quick Conversions

Historical Time Comparison

Explore how time measurement has changed throughout history and compare different historical periods

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Historical Periods

Time in 2025

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Why Choose Our Time Converter?

Global Time Zone Coverage

Accurate conversions for all major time zones with DST adjustments

Live Countdown Timers

Create and manage countdowns for events with visual progress indicators

Time Arithmetic

Add or subtract time units from any given time with precise calculations

Historical Time Context

Explore how time measurement has evolved throughout history

What Our Users Say

Join thousands of professionals who rely on our time converter

“This time converter is essential for our global team. The timezone visualization helps prevent scheduling errors across different regions.”

- Alex T., Project Manager

Frequently Asked Questions

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Quick Time Reference

UTC is the world's time standard

24 hours in a day

7 days in a week

365.25 days in a year

60 minutes in an hour

60 seconds in a minute

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Time Management Tips

Use world clock to schedule meetings across time zones effectively

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Use date difference calculator for project timeline planning

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