Free Timezone Converter - Convert Time Between World Timezones

Convert times between any of 600+ timezones worldwide instantly. Perfect for scheduling international meetings, coordinating with remote teams across continents, planning travel itineraries, checking business hours in other countries, and tracking global financial market hours. Simply select your source timezone, enter a time, and see the equivalent time across multiple target zones simultaneously. Daylight Saving Time (DST) is handled automatically—no manual adjustments needed.

In today's global workplace, timezone confusion causes missed meetings, delayed responses, and costly misunderstandings. Our converter helps remote teams, freelancers, travelers, and businesses operate smoothly across time differences. Compare up to 5 timezones side-by-side, bookmark your frequently used combinations, and quickly find the perfect meeting time when everyone is available during working hours.

How to Convert Timezones

Select Source Timezone: Choose your current timezone from the dropdown. The tool auto-detects your timezone on first use.
Enter Time/Date: Input the specific time and date you want to convert.
Add Target Timezones: Select one or more destination timezones to see the equivalent times.
View Results: Compare all timezones simultaneously with clear visual indicators of day/night for each location.
Save Favorites: Your timezone selections are saved in browser storage for quick access next visit.

Key Features

600+ Timezones: Covers all IANA standard timezones including regional and historical zones.
Automatic DST: Daylight Saving Time adjustments applied automatically based on current date and location.
Multi-Zone Comparison: View multiple timezones simultaneously to find overlapping working hours.
Current Time Display: See live current time in any city without entering a specific time.
Date-Aware: Correctly handles timezone conversions that cross midnight and change the date.
Persistent Settings: Your preferred timezones are remembered between sessions.
Mobile-Friendly: Works on all devices for on-the-go timezone lookups while traveling.

Common Use Cases

Remote Team Meetings: Find meeting times that work for team members in New York, London, Tokyo, and Sydney. Identify overlapping business hours across multiple continents.
International Client Calls: Confirm the exact local time for clients before sending calendar invites to avoid confusion and no-shows.
Travel Planning: Calculate arrival times, departure times, and jet lag impact when crossing multiple timezone boundaries.
Financial Markets: Track opening/closing hours for NYSE (EST), London (GMT), and Asian markets (JST, HKT) for global trading.
Global E-commerce: Determine business hours for international customer support, when to publish content for specific audiences, and processing time for international orders.
Live Events: Convert webinar, conference, and broadcast start times for international audiences.
Software Releases: Coordinate global software deployments across data centers in different timezones.
Gaming & Esports: Find tournament start times, server maintenance windows, and online event schedules across regions.

Understanding Timezones and DST

The world is divided into 24 primary time zones, each approximately 15 degrees of longitude apart, representing 1-hour differences from UTC (Coordinated Universal Time). However, many countries use half-hour or quarter-hour offsets (India: UTC+5:30, Nepal: UTC+5:45, Iran: UTC+3:30), creating over 600 distinct timezone identifiers.

Daylight Saving Time (DST) adds complexity—about 70 countries shift clocks forward 1 hour in spring and back in fall. DST start/end dates vary by country and hemisphere (southern hemisphere DST runs opposite to northern). Our converter uses the IANA timezone database (the global standard) to automatically calculate accurate conversions accounting for all DST rules.

Popular Timezone Abbreviations

UTC: Coordinated Universal Time (base reference, no offset)
EST/EDT: Eastern Standard/Daylight Time (UTC-5/-4, New York, Miami)
CST/CDT: Central Standard/Daylight Time (UTC-6/-5, Chicago, Mexico City)
PST/PDT: Pacific Standard/Daylight Time (UTC-8/-7, Los Angeles, Vancouver)
GMT/BST: Greenwich Mean/British Summer Time (UTC+0/+1, London)
CET/CEST: Central European Standard/Summer Time (UTC+1/+2, Paris, Berlin)
IST: India Standard Time (UTC+5:30, no DST)
CST: China Standard Time (UTC+8, Beijing, Shanghai)
JST: Japan Standard Time (UTC+9, Tokyo, no DST)
AEST/AEDT: Australian Eastern Standard/Daylight Time (UTC+10/+11, Sydney)

Frequently Asked Questions

Why does the converted time sometimes show a different date?

Timezone conversions often cross midnight. For example, 10 PM Monday in New York is 11 AM Tuesday in Tokyo (UTC+9 is 14 hours ahead of EST). Always pay attention to the date, not just the time, when scheduling across large timezone differences.

What's the difference between UTC and GMT?

GMT (Greenwich Mean Time) and UTC (Coordinated Universal Time) show the same offset (UTC+0) for practical purposes. UTC is the modern scientific standard based on atomic clocks, while GMT is the historical reference based on the prime meridian in Greenwich, England. For everyday timezone conversion, they're interchangeable.

Why doesn't DST affect all countries?

Daylight Saving Time is a political choice, not a geographic requirement. Many countries near the equator don't observe DST because seasonal daylight variation is minimal. Japan, China, India, and most of Asia/Africa don't use DST. Countries using DST transition on different dates based on national laws and hemisphere (spring/fall is reversed between northern and southern hemispheres).