Time Zone Converter
Compare times across cities, find overlapping work hours, and export meeting invites — all in one view.
Creates a calendar invite with all timezone conversions in the description
Time zone data follows the IANA Time Zone Database. DST transitions and time zone changes are updated periodically. Verify critical scheduling with official sources.
About this tool
What is this tool?
Find the best meeting time for your global team. 20+ cities, visual 24h timeline. Free.
What Is the Time Zone Converter?
The Time Zone Converter is a free, browser-based meeting planner that helps you find the best time for a meeting across 20+ time zones. It shows a visual 24-hour timeline with each participant's local time, highlights overlapping work hours, and is fully DST-aware. No signup, no data upload — perfect for remote teams, international calls, and scheduling across borders.
Who Should Use This Tool?
This tool is for remote teams, distributed companies, freelancers with international clients, virtual assistants, project managers, and anyone who schedules meetings across time zones. If you have ever accidentally scheduled a 3 AM call for your colleague in Tokyo, this tool prevents that.
How Does This Tool Work?
Add participants by selecting their time zones from the dropdown. The tool displays a 24-hour timeline showing each person's local time side by side. Overlapping work hours (default: 8 AM - 6 PM) are highlighted in green, making it easy to spot when everyone is available. The converter automatically accounts for Daylight Saving Time transitions, which differ by country and region.
How Do You Schedule a Meeting Across Multiple Time Zones?
You need a meeting with team members in New York (EST/EDT), London (GMT/BST), and Tokyo (JST): • 9:00 AM New York = 2:00 PM London = 10:00 PM Tokyo • Better option: 8:00 AM New York = 1:00 PM London = 9:00 PM Tokyo • The timeline shows this is within work hours for NY and London, but outside work hours for Tokyo. • Best compromise: 7:00 AM NY = 12:00 PM London = 8:00 PM Tokyo — early for NY, lunch for London, evening for Tokyo.
Frequently asked
How many time zones does the converter support?
The converter supports all major world time zones (20+), including US (Eastern, Central, Mountain, Pacific, Alaska, Hawaii), Europe (GMT, CET, EET), Asia (IST, JST, CST, SGT), Australia (AEST, AWST), and more. It uses the browser's built-in Intl API for accuracy.
Does it account for Daylight Saving Time?
Yes. The converter is fully DST-aware and automatically adjusts for DST transitions. DST start and end dates differ by country (US changes in March/November, Europe in March/October, Australia in April/October). The tool handles all these differences automatically.
Is the time zone converter free?
Yes, 100% free with no signup, no API limits, and no data upload. All calculations run in your browser using the standard JavaScript Intl API.
Can I find overlapping work hours?
Yes. The timeline highlights overlapping work hours (default 8 AM - 6 PM local time) in green, making it easy to see when all participants are available during their normal work hours. You can adjust the work hours window.
How accurate are the time zone conversions?
Conversions use your browser's built-in Internationalization API (Intl.DateTimeFormat), which is maintained by browser vendors and updated regularly with the latest IANA time zone database. This ensures accuracy for all time zones, including DST transitions.
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