Time Zone Converter & Meeting Planner

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Quick Summary

Convert a time across multiple cities at once and instantly see the overlapping working hours — the sane way to schedule a meeting across the globe.

Interactive Client Prototype Sandbox

Source time

UTC

GMT+0

Mon 09:00 AM

America/New York

GMT-4

Mon 05:00 AM

Europe/London

GMT+1

Mon 10:00 AM

Asia/Tokyo

GMT+9

Mon 06:00 PM

Overlapping working hours (08:00–20:00 in every zone) — by UTC hour

No hour keeps every city inside 08:00–20:00.

How to use the Time Zone Converter & Meeting Planner

Step-by-Step Guide

Set the source date, time, and zone, then add the cities you care about. Each row shows the local time; the grid below highlights the hours that work for everyone.

Example9:00 AM New York ➔ 2:00 PM London, 11:00 PM Tokyo — with the common working-hours band shaded.

Who it's for

Remote teams, freelancers with global clients, travelers, and anyone scheduling across borders.

Core Features

Convert one instant into any number of chosen cities using the browser's own time-zone database.
Automatic daylight-saving handling and live UTC offsets per city.
A 24-hour grid that highlights the hours that fall within 8am–8pm for every city.
Add or remove cities on the fly; fully offline.

🛡️ No tracking — your inputs, keys, and details never leave this client sandbox.