Timezone Converter

Convert times between timezones
This free online timezone converter runs in your browser and is part of our Utilities collection.

Timezone Converter

Convert time between different timezones around the world.

Select multiple timezones to compare times:

Popular Timezones:

  • UTC (Coordinated Universal Time)
  • EST/EDT - Eastern Time (US & Canada)
  • PST/PDT - Pacific Time (US & Canada)
  • GMT/BST - London
  • CET/CEST - Central Europe
  • JST - Japan Standard Time
  • AEST/AEDT - Australian Eastern Time
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Instant In-Browser Execution Runs locally in JavaScript without wait times or server delays.
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100% Privacy & Security Your inputs and files are never stored or logged on remote servers.
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Cross-Device Responsive Fully optimized for mobile smartphones, tablets, and desktop displays.
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100% Free Forever No subscription fees, no signups, and no software installations.

How to Use the Online Timezone Converter

1 Select Source Date, Time & City

Choose your base date and time, and select your originating timezone (e.g., UTC, New York EST/EDT, London GMT/BST, Tokyo JST).

2 Add Target Comparison Timezones

Search and select multiple destination timezones or major global cities to compare side-by-side.

3 Slide Interactive Time Slider

Drag the 24-hour interactive time slider to see equivalent times and day shifts update simultaneously across all selected cities.

4 Verify Business Hours & DST

Inspect daylight saving time (DST) status badges and visual working-hours highlights to schedule international meetings smoothly.

Frequently Asked Questions

Common questions about using this free online timezone converter.

Does this converter account for Daylight Saving Time (DST) changes? ▾
Yes. The converter relies on the official IANA Time Zone Database (tzdata) via the browser's native `Intl.DateTimeFormat` API, automatically factoring in regional DST shifts for any date in the year.
How are day boundaries and +1/-1 day shifts indicated? ▾
When a converted time crosses midnight into tomorrow or yesterday, the tool clearly displays a "+1 day" or "-1 day" pill badge next to that city's time.
What are the colored bands in the timeline? ▾
Green bands indicate standard business working hours (typically 9:00 AM – 5:00 PM), yellow indicates extended evening hours, and dark bands indicate local nighttime.
Can I search for countries and regions as well as cities? ▾
Yes. You can type city names (e.g., Sydney, Dubai, San Francisco), timezone abbreviations (PST, CET, IST), or country names into the search bar.

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