Time Zone Converter
Convert between 26 time zones worldwide. Select a conversion below or use our world clock to compare multiple time zones side by side.
Popular Timezone Conversions
Quick timezone-to-timezone conversions by abbreviation.
All Time Zones
Eastern Standard Time
New York
Central Standard Time
Chicago
Mountain Standard Time
Denver
Pacific Standard Time
Los Angeles
Greenwich Mean Time
London
British Summer Time
London
Central European Time
Paris
Eastern European Time
Athens
India Standard Time
Mumbai
Pakistan Standard Time
Karachi
Japan Standard Time
Tokyo
Korea Standard Time
Seoul
Singapore Time
Singapore
Hong Kong Time
Hong Kong
Australian Eastern Standard Time
Sydney
New Zealand Standard Time
Auckland
Coordinated Universal Time
UTC
Moscow Standard Time
Moscow
Gulf Standard Time
Dubai
West Africa Time
Lagos
South Africa Standard Time
Johannesburg
Brasília Time
São Paulo
Arabia Standard Time
Riyadh
Indochina Time
Bangkok
China Standard Time
Beijing
Turkey Time
Istanbul
How to Convert Time Between Timezones
Time zone conversion is essential for scheduling meetings across countries, coordinating with remote teams, or planning international travel. Clockwise covers 26 time zones with 648 conversion pairs, giving you instant access to time differences, business hours overlap, and DST information.
Each conversion page shows you the current time in both zones, a full 24-hour conversion table, DST information, and FAQ answers optimized for quick reference.
You can also use our world clock tool to compare multiple timezones simultaneously with a visual timeline — perfect for planning meetings across 3 or more time zones at once.
Common Time Zone Abbreviations
EST (Eastern Standard Time) is UTC-5, used in New York, Toronto, and Miami. PST (Pacific Standard Time) is UTC-8, used in Los Angeles, San Francisco, and Seattle. GMT (Greenwich Mean Time) is UTC+0, used in London. IST (India Standard Time) is UTC+5:30, used in Mumbai, Delhi, and Bangalore. PKT (Pakistan Standard Time) is UTC+5, used in Karachi, Lahore, and Islamabad. JST (Japan Standard Time) is UTC+9, used in Tokyo. CET (Central European Time) is UTC+1, used in Paris, Berlin, Rome, and Madrid. AEST (Australian Eastern Standard Time) is UTC+10/11, used in Sydney and Melbourne.