Built for teams tired of hour math
Time Zone Overlap Tool started from a simple annoyance: converting time zones one at a time doesn't answer the actual question, which is "when can everyone talk?"
What it does
Add every city on your team, and the tool lines up each person's day as a visual band, then highlights the stretch where everyone falls inside a typical 9am–6pm working day at the same time. No sign-up, no app to install — it runs entirely in your browser using standard, publicly available time zone data.
Who it's for
- Remote and distributed teams spread across multiple countries
- Freelancers and agencies coordinating calls with international clients
- Anyone scheduling a recurring call across more than two time zones
- Families and friends split across countries trying to find a good time to catch up
How it's funded
The site is free to use and supported by advertising through Google AdSense, which is disclosed in full in our Privacy Policy. There's no premium tier, paywall, or account required.
What it isn't
It's a scheduling aid, not an authoritative source — see our Disclaimer for details on daylight saving edge cases and working-hours assumptions.