Time Zone Converter — World Clock & Meeting Planner
Convert time between any two time zones instantly, view live clocks for major world cities, and plan meetings across time zones with the overlap visualizer. No login. No uploads. Works offline.
🕐 Live World Clocks
⚡ All calculations happen in your browser. Zero data stored.
What is a Time Zone Converter?
A Time Zone Converter lets you translate a specific date and time from one time zone to another instantly. Whether you're scheduling a video call with an international client, checking when a live event airs in your country, or planning international travel, this tool eliminates mental math and time zone confusion.
This tool supports all IANA time zones including all UTC offsets, major cities, and regional zones like IST (India Standard Time, UTC+5:30), EST/EDT (US Eastern), PST/PDT (US Pacific), JST (Japan), CET (Central Europe), and many more.
How to Use the Time Zone Converter
Select Time Zones — Choose source and destination zones from the dropdowns. All major world zones are available.
Enter Date & Time — Pick the date and time you want to convert, or click "Now" to use the current moment.
View Result — Instantly see the converted time, including any date change (e.g., if a meeting tomorrow at 9am EST is today at 11:30pm IST).
Plan Meetings — Use the Meeting Planner tab to add multiple participants and find overlapping business hours across all zones.
Frequently Asked Questions
What is the difference between GMT and UTC?
GMT (Greenwich Mean Time) and UTC (Coordinated Universal Time) are essentially the same offset (UTC+0), but UTC is the modern scientific standard used for time zone calculations, while GMT is still commonly used in everyday speech.
Does India have half-hour time zones?
Yes. India Standard Time (IST) is UTC+5:30 — a half-hour offset. Other notable half-hour zones include Iran (UTC+3:30), Afghanistan (UTC+4:30), and Myanmar (UTC+6:30).
What is Daylight Saving Time (DST)?
DST is the practice of advancing clocks by 1 hour during summer months in some countries (including the US, UK, Europe) to make better use of daylight. India and most Asian countries do not observe DST.
How do I schedule a meeting across multiple time zones?
Use the Meeting Planner tab — add each participant's time zone and the tool generates a visual overlap grid showing which hours are business hours for everyone simultaneously.