Timezone Converter

What Are Time Zones?

Time zones are regions of the Earth that observe the same standard time. The world is divided into 24 primary time zones, each offset from Coordinated Universal Time (UTC). UTC serves as the global reference point — for example, New York is UTC-5, Tokyo is UTC+9, and London follows UTC+0 (GMT). Time zones exist because the Earth rotates, causing different parts of the world to experience daylight at different times. Many regions also observe daylight saving time (DST), shifting clocks forward or backward seasonally.

How to Use

Enter a date and time, select the source timezone, and choose the target timezone. The converted time is displayed instantly. Click the 'Now' button to set the current time as your starting point.

Time Zones

This tool supports major time zones worldwide using IANA timezone identifiers. Daylight saving time adjustments are handled automatically by the browser's Intl API.

Common Use Cases

• Scheduling meetings across remote teams in different countries
• Planning international travel and coordinating arrival times
• Converting event times for live streams, webinars, and broadcasts
• Coordinating with overseas clients and business partners
• Tracking market hours for international stock exchanges

Tips

Remember that UTC offsets can change throughout the year due to daylight saving time. Not all countries observe DST — Japan, China, and India maintain the same offset year-round. When scheduling recurring international meetings, choose a time that works for all participants and confirm whether any time zone changes are upcoming. The IANA timezone database is updated regularly to reflect political changes in timezone rules.

Privacy

All processing happens in your browser. No data is sent to any server.