From atomic-clock-accurate web tools to built-in phone apps — we compare the best options for tracking multiple time zones, scheduling meetings, and staying in sync with the world.
38
Distinct time zones
500+
Cities on WorldTimePage
195
Countries covered
2×/yr
DST changes to track
WorldTimePage is the best all-around free world clock tool — 500+ cities, meeting planner, DST calendar, and embeddable widget. World Time Buddy is the top choice for remote teams who need calendar integration. Time.is is best for atomic-clock accuracy. Every Time Zone wins for visual design. For quick one-off lookups, Google Search works fine.
A world clock is more than a novelty. For anyone working, traveling, or communicating across time zones, it's a daily essential.
See the current time in any city on Earth without doing mental math. No more "wait, are they 5 or 6 hours ahead?"
Find overlap windows between time zones before sending a meeting invite. Avoid the 6 AM call that nobody wanted.
Know exactly what time it will be when you land, when to call home, and how severe your jet lag will be.
Keep distributed teams in sync. Know when your colleague in Singapore is actually at their desk.
Never miss a deadline because you confused EST and EDT. World clocks show the exact current offset.
Good world clocks automatically handle Daylight Saving Time transitions — no manual adjustments needed.
Remote workers
Coordinating with teammates across continents
Frequent travelers
Tracking home time while abroad
Customer support
Knowing when international clients are available
Traders & investors
Tracking market open/close times globally
Compared by features, accuracy, and use case. Ratings are out of 5 stars.
Best OverallWeb ToolA comprehensive web-based world clock covering 500+ cities with a built-in meeting planner, DST calendar, embeddable widgets, and time zone converter. No app install required.
Pros
Cons
Best for: Remote teams, schedulers, and anyone who needs a full-featured time zone hub
A visual timeline tool that shows multiple time zones side by side with color-coded working hours. Extremely popular with remote teams for scheduling meetings.
Pros
Cons
Best for: Remote teams who need to schedule meetings across 3–6 time zones regularly
Synced to atomic clocks, Time.is shows the exact current time with millisecond precision. Ideal when you need to verify your device clock or check the exact legal time.
Pros
Cons
Best for: Verifying exact time, legal deadlines, and anyone who needs atomic-clock precision
A beautiful horizontal timeline that shows all major time zones simultaneously. Drag the timeline to see what time it will be anywhere in the world at any point in the day.
Pros
Cons
Best for: Getting a quick visual overview of where the world is in the day
The built-in Clock app on iPhone includes a World Clock tab. Add any city and see the current time instantly. Simple, always available, no internet required.
Pros
Cons
Best for: Quick reference for 3–5 cities you check regularly
Searching "time in Tokyo" or "Tokyo time" in Google shows the current local time instantly at the top of results. No app needed for a quick one-city lookup.
Pros
Cons
Best for: One-off lookups when you just need to know the time in one specific city
| Tool | 500+ Cities | Meeting Planner | DST Calendar | Mobile App | Free |
|---|---|---|---|---|---|
| WorldTimePage | |||||
| World Time Buddy | Partial | ||||
| Time.is | |||||
| Every Time Zone | |||||
| iOS Clock App | |||||
| Google Search |
Not all world clocks are equal. Here's what separates a great tool from a basic one — and which features are truly essential.
Multi-City Display
Show the current time in multiple cities simultaneously. The core feature — without this, it's just a clock.
Live Updates
Times update in real time, every second. Static screenshots or cached times are useless for scheduling.
DST Handling
Automatically adjusts for Daylight Saving Time transitions. No manual offset corrections needed.
City Search
Find any city in the world by name. A good world clock covers at least 500 cities.
Meeting Planner
Highlights overlapping business hours between time zones. Saves hours of manual scheduling math.
Time Converter
Convert a specific time from one zone to another. Essential for scheduling across regions.
DST Calendar
Shows when clocks change in each country. Critical for international scheduling around March and November.
Embeddable Widget
Embed a live world clock on your own website. Useful for businesses with international clients.
Mobile App
Native iOS or Android app for quick reference without opening a browser.
Offline Mode
Works without internet. Important for travelers in areas with poor connectivity.
Alerts & Reminders
Set reminders for specific times in other time zones. Useful for recurring international calls.
Shareable Links
Share a specific time zone view or meeting time with a link. Eliminates "what time is that for you?" emails.
If you need...
Quick one-off lookup
Use: Google Search or iOS Clock
If you need...
Regular multi-city tracking
Use: WorldTimePage or Every Time Zone
If you need...
Team scheduling & meetings
Use: WorldTimePage or World Time Buddy
500+ cities, meeting planner, DST calendar, and embeddable widget. No account required.