“Is That 3 PM Your Time or My Time?”
Remote work made this question a daily occurrence. Your team is in San Francisco, your client is in London, your contractor is in Bangalore, and the stakeholder meeting somehow needs to work for all of them. Manually calculating time zone offsets gets messy fast — especially when daylight saving time kicks in and your carefully planned schedule shifts by an hour in some zones but not others.
The Time Zone Converter takes a date and time in any of 35+ major time zones and shows you the equivalent time in as many other zones as you want, simultaneously. Toggle on US Pacific, London, Tokyo, and Sydney, and you’ll see all four converted times on one screen. It uses your browser’s built-in Intl.DateTimeFormat API, which means DST is handled automatically — no mental math about whether London is currently on GMT or BST.
What Makes It Work Well
- 35+ time zones covering UTC, every US zone, Canada, Mexico, South America, Europe, Middle East, South and Southeast Asia, East Asia, Australia, New Zealand, and Africa
- Multi-zone comparison — toggle on as many target zones as you need
- Automatic DST handling through the browser’s Intl API (it knows the rules better than you do)
- A “Now” button that sets the current date and time as your starting point
- Everything runs in your browser, nothing gets sent anywhere
Using the Converter
- Select your source time zone
- Set the date and time, or click “Now” for right now
- Toggle target zones on or off by clicking their buttons
- Read the converted times for all selected zones
Scheduling a meeting at 10:00 AM US Eastern? Toggle on the zones that matter and you’ll see it falls at 7:00 AM Pacific, 3:00 PM London (during BST), 11:00 PM Tokyo, and 1:00 AM the next day in Sydney. That last one means your Sydney colleague isn’t making this meeting.
Where This Actually Gets Used
- Distributed teams trying to find a meeting time that doesn’t ruin someone’s morning or evening
- International business calls where you need to know if you’re calling during their working hours or their dinner
- Travel planning — figuring out what time you’ll land in local time, when your connecting flight is, and what time that is back home
- Event organizers communicating start times to a global audience without causing confusion
- The simple act of checking whether it’s an appropriate hour to call a friend in another country
The Unit Converter Pro handles measurement conversions if you need those alongside time zones. The Currency Converter Pro covers 36+ currencies for the financial side of international work.
Commonly Asked
Does it actually handle DST correctly?
Yes. It uses the browser’s Intl API, which maintains the current DST rules for each time zone. When clocks spring forward or fall back, the converter adjusts automatically. No manual offset math needed.
How many zones can I compare at once?
As many as you want. Toggle on every zone if you’re feeling ambitious. They’ll all display simultaneously.
What if my exact zone isn’t listed?
The 35+ zones cover the most commonly needed regions. If your specific zone isn’t listed but shares an offset with one that is, use that as a reference. Most zones are covered though.
Privacy concerns?
None. Everything happens in your browser. No dates, times, or zone selections are transmitted anywhere.
Free?
Yes. No accounts, no limits.