About this tool
Plan meetings and coordinate remote teams across global timezones without timezone math errors. View side-by-side time matrices highlighting normal working hours overlap.
Timezone Converter / World Clock
Compare world times and plan international meetings across global timezones with working hours overlap.
Enter the source meeting time in UTC using YYYY-MM-DD HH:MM format.
Example
- datetime: 2026-03-01 14:30
- extraZones: Europe/London Asia/Kolkata America/New_York
Output
EVERYDAYWaiting
Run the tool to generate output.
When to use this tool
Use Timezone Converter when scheduling cross-border video calls, release deployments, or webinars without making mental UTC calculation errors.
Inputs, Formats & Specifications
- Accepted Inputs
- Date, hour, minute, source IANA timezone, and destination timezone selections
- Output Formats
- Side-by-side time comparison table, UTC offsets, day indicators (+1 day / -1 day), business hours highlight
- Supported Standards
- All standard IANA timezones (e.g. America/Chicago, Europe/Paris, Asia/Dubai)
- Browser Limits & Scope
- Requires browser support for the standard ECMAScript Internationalization API (supported in all modern browsers).
How to use this tool
- Set your reference meeting date and time using the clock and date selectors.
- Choose your local or home timezone (e.g. America/New_York or UTC).
- Add one or more destination timezones to compare (e.g. Europe/London, Asia/Kolkata, Asia/Tokyo).
- Inspect the visual hourly comparison grid highlighting overlapping working business hours (9:00 AM – 5:00 PM).
Examples
Global Team Sprint Planning
Find a collaborative 1-hour meeting slot across engineers in San Francisco (PST), London (GMT), and Bangalore (IST) without scheduling someone at 3 AM.
International Webinar Coordination
Determine the exact local broadcast time for attendees in New York, Berlin, Sydney, and Singapore for an event scheduled at 14:00 UTC.