Free world clock converter, time zone calculator, and international time conversion tool. Convert between PST, EST, CST, MST, GMT, UTC, IST, JST, AEST and 50+ time zones instantly. Whether you call it a world clock converter, timezone converter, world time calculator, or global time converter — this is the same tool, free, with live clocks and DST-aware conversion tables. Select a conversion below or use our meeting planner for city-based scheduling.
Most Popular Conversions
PST to EST — Pacific Standard Time to Eastern Standard Time
EST to PST — Eastern Standard Time to Pacific Standard Time
CST to EST — Central Standard Time to Eastern Standard Time
EST to CST — Eastern Standard Time to Central Standard Time
PST to CST — Pacific Standard Time to Central Standard Time
CST to PST — Central Standard Time to Pacific Standard Time
MST to EST — Mountain Standard Time to Eastern Standard Time
EST to MST — Eastern Standard Time to Mountain Standard Time
PST to MST — Pacific Standard Time to Mountain Standard Time
MST to PST — Mountain Standard Time to Pacific Standard Time
PST to GMT — Pacific Standard Time to Greenwich Mean Time
EST to GMT — Eastern Standard Time to Greenwich Mean Time
CST to GMT — Central Standard Time to Greenwich Mean Time
PST to UTC — Pacific Standard Time to Coordinated Universal Time
EST to UTC — Eastern Standard Time to Coordinated Universal Time
GMT to EST — Greenwich Mean Time to Eastern Standard Time
GMT to PST — Greenwich Mean Time to Pacific Standard Time
UTC to EST — Coordinated Universal Time to Eastern Standard Time
UTC to PST — Coordinated Universal Time to Pacific Standard Time
PST to CET — Pacific Standard Time to Central European Time
Time zones divide the world into regions that observe the same standard time. Converting between time zones is essential for international business, remote work, travel planning, and coordinating with friends and family abroad.
Common Time Zone Abbreviations
PST/PDT: Pacific Standard/Daylight Time (US West Coast)
EST/EDT: Eastern Standard/Daylight Time (US East Coast)
GMT: Greenwich Mean Time (UK, when not in DST)
UTC: Coordinated Universal Time (global standard)
IST: India Standard Time
JST: Japan Standard Time
AEST: Australian Eastern Standard Time
Tips for Time Zone Conversion
Remember that Daylight Saving Time can change offsets by 1 hour
Not all countries observe DST — check both locations
Some time zones have 30 or 45-minute offsets (India, Nepal, parts of Australia)
Use city-based conversion for accuracy during DST transitions
Time Zone Calculator
Beyond converting fixed times, this tool also works as a time zone calculator and world clock calculator. Enter any time in one zone and the calculator instantly returns the equivalent time in every other zone — no spreadsheet math, no manual offset adjustments. The calculator handles Daylight Saving Time transitions automatically using the IANA Time Zone Database, so a meeting scheduled three weeks out still calculates correctly even if either side's DST shift happens in between.
International & Global Time Conversion
Use this as your international time converter or global time converter for any cross-border coordination — international business calls, worldwide remote teams, conference scheduling, or comparing global market hours. The worldwide clock converter covers every continent: North America (PST/EST), Europe (GMT/CET), Asia (IST/JST/SGT), Middle East (GST/AST), Australia (AEST), and beyond. Each conversion is rendered as a full international time conversion table so you can scan all 24 hours at a glance instead of converting one slot at a time.
Looking for the "classic" time zone converter experience — a clean, fast, ad-free table without sign-ups or pop-ups? That's exactly what WorldClock.lol's converter delivers. No account, no email, no upsell.
Time zones divide the world into regions that observe the same standard time. Converting between time zones is essential for international business, remote work, travel planning, and coordinating with friends and family abroad.
Common Time Zone Abbreviations
PST/PDT: Pacific Standard/Daylight Time (US West Coast)
EST/EDT: Eastern Standard/Daylight Time (US East Coast)
GMT: Greenwich Mean Time (UK, when not in DST)
UTC: Coordinated Universal Time (global standard)
IST: India Standard Time
JST: Japan Standard Time
AEST: Australian Eastern Standard Time
Tips for Time Zone Conversion
Remember that Daylight Saving Time can change offsets by 1 hour
Not all countries observe DST - check both locations
Some time zones have 30 or 45-minute offsets (India, Nepal, parts of Australia)
Use city-based conversion for accuracy during DST transitions