Time Zone Converter

How It Works

Every time zone is an offset from Coordinated Universal Time (UTC), and the offset changes through the year wherever daylight saving applies. The converter takes the date and time you enter, works out what instant that is in the first zone, and shows what the clock reads at that same instant in the second zone — always using the rules in force on the date you pick.

All of this runs on your browser’s built-in time-zone database, the same IANA data that powers your phone’s clock. Nothing is fetched from a server, so it works offline and your dates never leave your device.

Worked Example

On January 15, 2026, noon in New York is 5:00 PM the same day in London (New York is UTC−5 in winter, London UTC+0). The same moment is 10:00 PM in Karachi (UTC+5) and 2:00 AM the next day in Tokyo (UTC+9). The table below shows the same noon in more cities.

Assumptions

• Times are converted for the exact date you enter, using the daylight saving rules in force on that date.
• Your browser’s time-zone database is up to date; very old browsers may carry outdated rules.
• Seconds are not entered — the conversion is to the minute.

12:00 noon in New York on January 15, 2026, around the world:

How to Use This Converter

Pick the date and time in the first zone, then choose the zone to convert to. The result updates live, showing both times with their zone abbreviations and the hour difference. Use Swap Zones to reverse the conversion in one click.

Tips and Practical Advice

Always convert the actual date of your meeting or flight — a conversion done for today can be wrong next month if either zone changes its clocks in between. Watch the date as well as the time: Tuesday afternoon in New York can be Wednesday morning in Sydney. And when you send an invite, include the time in the other person’s zone too.