Time Zone Converter
Convert time across time zones instantly. Compare world clocks, plan meetings, and calculate time differences. Free, private, no sign up.
Quick Select:
Current Time — America/New_York
Sat, 06/27/2026, 20:17:42
Quick Select:
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Current Time — Asia/Shanghai
Sun, 06/28/2026, 08:17:42
Features
100% Browser-Based
All time zone calculations happen in your browser. Your data never leaves your device.
Free & No Sign Up
No registration, no limits, no hidden fees.
Instant Results
Real-time conversion as you select — zero waiting.
Meeting Planner
Compare multiple time zones side by side to find the best meeting time across regions.
How Do You Convert Time Across Time Zones?
- Select your source time zone and enter the date and time you want to convert.
- Choose the target time zone — or add multiple zones to compare side by side.
- The converted time appears instantly, automatically accounting for daylight saving time.
- Use the meeting planner feature on ToolsMio to find overlapping working hours across regions.
- Copy the converted time or share the comparison view with your team for effortless coordination.
Common Use Cases
Scheduling Global Meetings
Find the best meeting time for teams spread across New York, London, and Tokyo. ToolsMio shows overlapping work hours side by side so no one meets at midnight.
Travel Planning
Quickly check what 9 AM departure in your home city translates to at your destination, helping you plan calls, hotel check-ins, and jet lag recovery.
Live Event & Broadcast Coordination
Convert event start times to your viewers' local times to avoid confusion. Essential for webinars, product launches, and sports broadcasts.
Remote Team Management
Keep track of team members' working hours across time zones and set deadlines that respect everyone's local business hours.
What Should You Know About Time Zone Conversion?
- ✓ UTC (Coordinated Universal Time) is the global reference — all time zones are expressed as offsets from UTC (e.g., UTC+5, UTC-8). ToolsMio uses IANA standards for accuracy.
- ✓ Daylight Saving Time (DST) shifts clocks by one hour in certain regions. Always verify meeting times near DST transition dates in spring and fall.
- ✓ Some countries do not observe DST at all (e.g., Japan, China, India), which simplifies scheduling with those regions year-round.
- ✓ When scheduling across more than 8 hours of difference, consider rotating meeting times so the inconvenience is shared fairly among all participants.
- ✓ The International Date Line can cause the same moment to fall on different calendar dates — double-check dates when coordinating with Pacific region teams.
Frequently Asked Questions
Is my data sent to any server?
No. All time zone conversions are performed entirely in your browser using JavaScript and the built-in Intl API. No data is ever sent to any server. When you select a source and target time zone, your browser calculates the time difference locally using the IANA time zone database that is embedded in your operating system. This means your scheduling information, meeting times, and personal calendar data remain completely private — nothing is logged, stored, or transmitted to any external service. Even if you are coordinating sensitive business meetings or confidential events, you can use ToolsMio with full confidence. The tool also works offline once the page has loaded, so you can continue converting times even without an active internet connection. Your privacy is our priority.
How many time zones are supported?
ToolsMio supports all IANA time zones, which includes over 400 recognized time zones worldwide. This comprehensive coverage ensures you can convert times for any city or region on the planet, from major business hubs like New York, London, Tokyo, and Sydney to smaller cities with unique offset rules. The IANA database is the industry standard used by operating systems, programming languages, and international organizations, so you can trust the accuracy of every conversion. Each time zone entry includes its historical rules for daylight saving time, political boundary changes, and offset adjustments. Whether you are scheduling a one-off meeting across two continents or managing an ongoing project with a globally distributed team, ToolsMio has the time zone coverage you need to coordinate effectively without any gaps or inaccuracies.
Does it account for daylight saving time?
Yes. ToolsMio automatically accounts for daylight saving time transitions using your browser's built-in Intl.DateTimeFormat API, which references the IANA time zone database for accurate DST rules. When a region observes daylight saving time, clocks typically shift forward by one hour in spring and back by one hour in fall, and our converter applies these changes automatically based on the specific date you are converting. This is crucial because the time difference between two cities can change by an hour depending on whether either location is currently observing DST. For example, the offset between New York and London shifts from 5 hours to 4 hours when the US and UK transition on different dates. ToolsMio handles all of these nuances seamlessly, so you never have to manually calculate DST adjustments when scheduling across time zones.
Can I compare multiple time zones at once?
Yes! ToolsMio lets you add multiple time zones and compare them side by side, making it incredibly easy to find overlapping working hours for participants in different regions. This is especially valuable for scheduling meetings across three or more time zones, where manually calculating offsets for each participant quickly becomes error-prone. By displaying all selected time zones in a single view, you can instantly identify time slots that fall within reasonable business hours for everyone involved. For instance, you can compare New York, London, and Mumbai simultaneously to find a window that avoids early mornings and late nights for any participant. You can add or remove time zones freely, and all conversions update in real time. This side-by-side comparison eliminates the back-and-forth typically involved in cross-timezone scheduling, saving you time and preventing costly miscommunications.