Time Zone Converter
Sync your global schedule. Add cities, compare local times, and find the perfect window for your next international call.
Global Sync Active
Drag the slider above to see how time shifts across your selected regions.
Global Time Coordination
Time zones are regions of the Earth that have the same standard time. Coordinating meetings across these zones requires understanding UTC offsets and daylight saving adjustments.
The 9-to-5 Rule
Our calculator highlights the "Business Window" (9 AM to 5 PM) for each city, making it easy to spot overlapping working hours between team members in London, Tokyo, or San Francisco.
UTC & Offsets
Coordinated Universal Time (UTC) is the primary time standard by which the world regulates clocks. Every time zone is expressed as an offset from UTC (e.g., UTC-5 for EST).