HeroTools / Productivity
Local · Private · Free

Time Zone Planner

Add cities, slide across the day and instantly see everyone's local time — with overlapping working hours highlighted so you know when to meet.

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Working hours (9am–6pm) Likely asleep Selected hour

Calculated locally with your browser's own time-zone database — nothing is sent anywhere.

No zones yet — add a city above to start planning.

Find the meeting slot that works for everyone

Pick a reference city, drag the slider, and every other zone updates live — green blocks show standard 9-to-6 working hours and the banner tells you whether the selected hour lands inside everyone's workday. It uses your browser's built-in time-zone data (so daylight-saving is handled automatically) and runs fully offline.

About Time Zone Planner

Time Zone Planner is a free, private productivity tool that runs entirely in your web browser. Find the best meeting time across multiple time zones. Because everything happens locally on your device, your files and data are never uploaded to a server, there is no sign-up or installation required, and it keeps working offline. It is handy for timezone, meeting, world clock, schedule. Like every HeroTool by Digital Heroes, Time Zone Planner is 100% free with no limits.

How to use Time Zone Planner

  1. Open Time Zone Planner — it runs entirely in your browser, with no signup.
  2. Fill in the fields or choose the options you want.
  3. Adjust the options to match exactly what you need.
  4. Copy or download your result — it is free, and your data stays on your device.

Frequently asked questions

Is Time Zone Planner free?

Yes — Time Zone Planner is completely free for everyone. No sign-up, no account and no usage limits.

Is it private? Are my files uploaded anywhere?

No. Time Zone Planner runs entirely in your browser on your own device, so your data never leaves your computer and nothing is uploaded to a server.

Does it work offline?

Yes. HeroTools is a Progressive Web App — once the page has loaded it keeps working offline, and you can install it as an app from your browser.

Do I need to install anything or create an account?

No. Just open the page and start using it. Installing it as an app is optional and only adds offline convenience.

What does Time Zone Planner do?

Find the best meeting time across multiple time zones.

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