What is Timezoner?

Timezoner is a tool to help you have a better understanding of time zones and coordinate multiple people across the world. Select multiple timezones on the map or search for cities, then use the planner grid to find a time that works for everyone.

Unlike traditional timezone converters that rely on dropdown menus, Timezoner provides a visual, interactive experience. Click directly on the world map to select regions, see timezone overlaps at a glance, and share meeting times with your team.

How to use

1. Click on the map or search for cities/timezones to select them
2. Selected timezones appear in the list on the right
3. Use the planner grid below to compare hours across timezones
4. Click on a column to select a time and see the summary
5. Copy the summary to share with others

→ Try Timezoner now

Features

• Interactive world map – Click to select timezones visually
• City search – Find any city and add its timezone
• 24-hour comparison grid – See all timezones side by side
• Meeting time optimizer – Find overlapping working hours
• Shareable summaries – Copy and paste time coordination
• No signup required – Start using immediately

Created by

Built by Pierre Bellon

Data & Credits

• Timezone boundaries: timezone-boundary-builder (ODbL License)
• City database: GeoNames (CC BY 4.0)
• Map tiles: OpenStreetMap contributors

Open Source

Timezoner is built with open source technologies including React, Leaflet, and Turf.js.