Free Timezone Converter - Convert Times Across Global Timezones

Timezone Converter

A simple, free timezone converter to help you convert times between different timezones around the world. Perfect for scheduling international meetings, planning travel, and coordinating across global timezones. No Signup Required.

🌐 Time Zone Converter

Professional time conversion for global teams

Atlanta, USA

London, UK

From Location:

To Location:

Invalid DateTime

Working Hours

Working hours are highlighted in the time table to help identify overlapping business hours.

Atlanta, USA	London, UK	Day
00:00	05:00	Tue
01:00	06:00	Tue
02:00	07:00	Tue
03:00	08:00	Tue
04:00	09:00	Tue
05:00	10:00	Tue
06:00	11:00	Tue
07:00	12:00	Tue
08:00	13:00	Tue
09:00	14:00	Tue
10:00	15:00	Tue
11:00	16:00	Tue
12:00	17:00	Tue
13:00	18:00	Tue
14:00	19:00	Tue
15:00	20:00	Tue
16:00	21:00	Tue
17:00	22:00	Tue
18:00	23:00	Tue
19:00	00:00	Wed
20:00	01:00	Wed
21:00	02:00	Wed
22:00	03:00	Wed
23:00	04:00	Wed

Working hours (9:00 - 17:00)

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Smart Snaps

Did You Know?

The concept of standardized time zones was first proposed in 1879 by Canadian railway engineer Sir Sandford Fleming after he missed a train due to confusion over local times.

Before standardization, each town maintained its own local time based on the sun's position, creating chaos for railway schedules. The world's timezones weren't fully standardized until 1929, nearly 50 years after the initial proposal.

Today, there are actually 38 different time zones in use globally, not just 24, with some regions using 30 or 45-minute offsets from UTC.

The most extreme timezone difference is 26 hours between the Baker Island (UTC-12) and Line Islands (UTC+14), meaning you could experience the same hour on three different calendar days.

Technical Insight

Modern timezone conversion relies on the IANA Time Zone Database (tzdata), a comprehensive collection of rules and historical timezone changes maintained since 1986.

This database tracks over 2,000 timezone rule changes across history, including Daylight Saving Time transitions and political boundary adjustments.

Conversion algorithms must handle edge cases like the International Date Line, leap seconds, and historical anomalies such as when Samoa skipped December 30, 2011, entirely when changing from UTC-11 to UTC+13.

Internally, most conversion systems store all timestamps in UTC (Coordinated Universal Time) and apply offset calculations only during display, using specialized libraries that implement the complex rules governing timezone transitions throughout history.

Frequently Asked Questions

What can I do with the Timezone Converter?

Our Timezone Converter allows you to easily convert times between different timezones around the world. It's perfect for scheduling international meetings, planning travel across time zones, and coordinating with people in different countries.

How do I use this timezone converter?

Simply select your source timezone, enter the time you want to convert, then select the destination timezone. The converter will instantly show you the equivalent time in the target timezone.

Does the converter account for Daylight Saving Time?

Yes, our timezone converter automatically accounts for Daylight Saving Time (DST) changes in different regions, ensuring accurate time conversions throughout the year.

Can I convert multiple timezones at once?

No, this is not possible. You can only convert one timezone at a time.

How accurate is this timezone converter?

Our converter uses up-to-date timezone data and follows international standards for timezone calculations, ensuring highly accurate conversions.

Is my time information secure when using this converter?

Yes, we take data security seriously. Your time conversion is processed locally in your browser and never sent to our servers. This ensures complete privacy and security of your information.