Time Zone Converter

Convert time between different time zones instantly with accurate time differences

Current Time

05:24:24 PM

New York (EST/EDT)

Current Time

10:24:24 PM

London (GMT/BST)

From Time Zone

To Time Zone

Date

Time

Quick Time Zone Comparisons

UTC

10:24 PM

New York

05:24 PM

Chicago

04:24 PM

Denver

03:24 PM

Los Angeles

02:24 PM

London

10:24 PM

About Time Zones

• Time zones are regions that observe a uniform standard time
• UTC (Coordinated Universal Time) is the primary time standard
• Some regions observe daylight saving time (DST), which can affect conversions
• Meeting planners should use this tool to find optimal meeting times

What is a Time Zone Converter?

Time Zone Converter is a tool that instantly converts time from one geographical time zone to another. It accounts for time zone offsets, UTC differences, and daylight saving time changes to provide accurate time conversions for global coordination.

Why Use a Time Zone Converter?

International Business: Schedule meetings across continents
Remote Teams: Coordinate with distributed team members
Travel Planning: Check arrival times and schedule activities
Global Events: Watch live sports, streams, webinars
Personal Communication: Call family and friends abroad
Project Management: Set deadlines across time zones

Understanding Time Zones

How Time Zones Work

Earth's Rotation:

Earth rotates 360° in 24 hours
15° of rotation = 1 time zone (1 hour)
24 theoretical time zones worldwide
Each zone differs by approximately 1 hour

UTC (Coordinated Universal Time):

Primary time standard worldwide
Reference point for all time zones
UTC±0 offset (no daylight saving time)
Replaced GMT (Greenwich Mean Time)

Time Zone Offsets:

Range from UTC-12 to UTC+14
Some use half-hour offsets (UTC+5:30)
Some use 45-minute offsets (UTC+5:45)
Political boundaries affect actual zones

Major Time Zones Worldwide

North America:

Zone	Offset	Cities	DST
Eastern Time	UTC-5/-4	New York, Washington, Miami	Yes (EDT)
Central Time	UTC-6/-5	Chicago, Texas, Mexico City	Yes (CDT)
Mountain Time	UTC-7/-6	Denver, Phoenix (no DST)	Partial (MDT)
Pacific Time	UTC-8/-7	Los Angeles, Vancouver	Yes (PDT)
Alaska Time	UTC-9/-8	Anchorage	Yes (AKDT)
Hawaii Time	UTC-10	Honolulu	No

Europe:

Zone	Offset	Cities	DST
GMT/BST	UTC+0/+1	London, Dublin	Yes (BST)
CET/CEST	UTC+1/+2	Paris, Berlin, Rome	Yes (CEST)
EET/EEST	UTC+2/+3	Athens, Helsinki	Yes (EEST)
MSK	UTC+3	Moscow, Istanbul	No

Asia:

Zone	Offset	Cities	DST
IST	UTC+5:30	Mumbai, New Delhi	No
CST	UTC+8	Beijing, Shanghai	No
JST	UTC+9	Tokyo, Seoul	No
AEST	UTC+10	Sydney (no DST), Brisbane	Partial

Daylight Saving Time (DST)

What is DST?

Clocks spring forward 1 hour in spring/summer
Clocks fall back 1 hour in autumn/winter
"Spring forward, fall back"
Not observed worldwide

Countries with DST:

United States (most states)
Canada (most provinces)
Europe (most countries)
Parts of Australia
New Zealand

Countries without DST:

Most of Asia
Most of Africa
Parts of the United States (Arizona, Hawaii)

DST Dates (Northern Hemisphere):

Start: Second Sunday in March
End: First Sunday in November

DST Dates (Europe):

Start: Last Sunday in March
End: Last Sunday in October

Time Zone Conversion Examples

Example 1: Business Meeting - US to Europe

Scenario:

New York: 9:00 AM EST (UTC-5)
London: 2:00 PM GMT (UTC+0)
Paris: 3:00 PM CET (UTC+1)

Calculation:

New York (EST): 9:00 AM UTC-5
UTC: 2:00 PM UTC+0 (add 5 hours)
London (GMT): 2:00 PM (same as UTC)
Paris (CET): 3:00 PM (add 1 hour)

Time Difference:

London is 5 hours ahead of New York
Paris is 6 hours ahead of New York

Example 2: Pacific to Asia

Scenario:

Los Angeles: 10:00 AM PST (UTC-8)
Tokyo: 3:00 AM JST (next day) (UTC+9)

Calculation:

Los Angeles (PST): 10:00 AM UTC-8
UTC: 6:00 PM UTC+0 (add 8 hours)
Tokyo (JST): 3:00 AM UTC+9 (add 9 hours, next day)

Time Difference:

Tokyo is 17 hours ahead of Los Angeles
Or 7 hours behind on the previous day

Example 3: Multi-City Conference Call

Participants:

New York (EST)
London (GMT)
Dubai (GST)
Singapore (SGT)
Sydney (AEDT)

Time Conversion Table:

City	Time	Offset
New York	9:00 AM	UTC-5
London	2:00 PM	UTC+0
Dubai	6:00 PM	UTC+4
Singapore	10:00 PM	UTC+8
Sydney	1:00 AM (+1)	UTC+11

Analysis: Not ideal for Sydney (middle of night). Consider different time.

Meeting Planner Guide

Finding Optimal Meeting Times

Step 1: List All Participant Locations

San Francisco (PST)
New York (EST)
London (GMT)
Berlin (CET)

Step 2: Define Business Hours

San Francisco: 9:00 AM - 5:00 PM PST
New York: 9:00 AM - 5:00 PM EST
London: 9:00 AM - 5:00 PM GMT
Berlin: 9:00 AM - 5:00 PM CET

Step 3: Convert to Common Time Zone (UTC)

San Francisco: 5:00 PM - 1:00 AM (+1) UTC
New York: 2:00 PM - 10:00 PM UTC
London: 9:00 AM - 5:00 PM UTC
Berlin: 8:00 AM - 4:00 PM UTC

Step 4: Find Overlap

Overlap: 2:00 PM - 4:00 PM UTC
San Francisco: 6:00 AM - 8:00 AM ❌
New York: 9:00 AM - 11:00 AM ✓
London: 2:00 PM - 4:00 PM ✓
Berlin: 3:00 PM - 5:00 PM ✓

Result: No good time for all participants. Consider alternatives:

Exclude San Francisco (recorded meeting)
Staggered meetings
Asynchronous communication

Best Meeting Time Strategies

US + Europe:

8:00 AM EST = 1:00 PM GMT (early for US, afternoon for EU)
2:00 PM EST = 7:00 PM GMT (afternoon for US, evening for EU)
Best: 11:00 AM - 2:00 PM EST

US + Asia:

Very challenging overlap
US evening = Asia morning
Best: 8:00 PM - 11:00 PM EST = 8:00 AM - 11:00 AM JST (next day)

Europe + Asia:

More manageable than US + Asia
Best: 8:00 AM - 10:00 AM CET = 2:00 PM - 4:00 PM SGT

Time Zone Meeting Tips

Dos:

✓ Use a world clock display
✓ Always specify time zone in invitations
✓ Rotate inconvenient times fairly
✓ Use UTC for international teams
✓ Consider async communication
✓ Record meetings for those who can't attend

Don'ts:

✗ Assume everyone knows the time zone
✗ Schedule during lunch/early morning/late evening
✗ Forget to check for DST changes
✗ Make one region always accommodate

Travel Planning with Time Zones

Before You Travel

Check Destination Time:

Understand time difference
Plan jet lag adjustment
Schedule activities appropriately

Example: New York to London

Depart: 8:00 PM EST (New York)
Flight: 7 hours
Time difference: +5 hours
Arrive: 8:00 + 7:00 + 5:00 = 8:00 AM GMT (next day)

Managing Jet Lag

Eastward Travel (e.g., US to Europe):

More challenging jet lag
Loses time
Body clock behind local time
Adjustment: ~1 day per time zone

Westward Travel (e.g., Europe to US):

Easier jet lag
Gains time
Body clock ahead of local time
Adjustment: Faster than eastward

Tips:

Adjust sleep schedule before departure
Stay hydrated
Get sunlight at destination
Avoid alcohol/caffeine

Time Zone Facts & Trivia

Interesting Time Zones

UTC+14:

Line Islands (Kiribati)
Earliest time zone on Earth
First to celebrate New Year

UTC-12:

Baker Island, Howland Island (US)
Latest time zone on Earth
Last to celebrate New Year

UTC+5:30:

India
Half-hour offset
Single time zone for entire country

UTC+5:45:

Nepal
Unique 45-minute offset
Only country with this offset

China:

Single time zone (UTC+8)
Despite spanning 5 geographical zones
Beijing time everywhere

International Date Line

What:

Line where date changes
Roughly follows 180° longitude
Zigzags around countries

Crossing East to West:

Gain 1 day
"Yesterday" to "today"

Crossing West to East:

Lose 1 day
"Today" back to "yesterday"

Example:

Tuesday 10:00 PM in Samoa (UTC-14)
→ Cross International Date Line
→ Wednesday 12:00 AM in Kiribati (UTC+14)

Common Time Zone Conversions

Quick Reference Table

From	To	Time Difference
New York (EST)	Los Angeles (PST)	-3 hours
New York (EST)	London (GMT)	+5 hours
New York (EST)	Paris (CET)	+6 hours
New York (EST)	Tokyo (JST)	+14 hours
London (GMT)	Tokyo (JST)	+9 hours
London (GMT)	Sydney (AEDT)	+11 hours
Tokyo (JST)	Sydney (AEDT)	+2 hours

Time Zone Abbreviations

Common Abbreviations:

UTC - Coordinated Universal Time
GMT - Greenwich Mean Time
EST - Eastern Standard Time
EDT - Eastern Daylight Time
CST - Central Standard Time
PST - Pacific Standard Time
CET - Central European Time
EET - Eastern European Time
JST - Japan Standard Time
IST - India Standard Time
AEST - Australian Eastern Standard Time
AEDT - Australian Eastern Daylight Time

Practice Examples

Example 1: Convert EST to GMT

From: New York, 3:00 PM EST
To: London (GMT)

Calculation:

New York: 3:00 PM EST (UTC-5)
UTC: 8:00 PM UTC+0 (add 5 hours)
London: 8:00 PM GMT (same as UTC)

Time Difference: +5 hours

Example 2: Meeting Planner - 3 Cities

Locations:

San Francisco (PST)
New York (EST)
London (GMT)

Optimal Time:

San Francisco: 9:00 AM PST
New York: 12:00 PM EST
London: 5:00 PM GMT

All within business hours ✓

Example 3: Flight Duration with Time Zones

Flight: Tokyo to Los Angeles

Depart: Tokyo 6:00 PM JST (UTC+9)
Flight Time: 10 hours
Time Difference: -17 hours (LA is behind)

Calculation:

Departure: 6:00 PM JST
UTC: 9:00 AM UTC (subtract 9 hours)
Flight: +10 hours = 7:00 PM UTC
Los Angeles: 12:00 PM PST (subtract 7 hours)

Result: Arrive 12:00 PM same day (local time)

Frequently Asked Questions

How do I convert time zones?

Use our time zone converter by selecting your source city and destination city. Enter the time and date, and instantly see the converted time in the target zone with the exact time difference and UTC offset.

What is the time difference between EST and PST?

EST (Eastern Standard Time) is 3 hours ahead of PST (Pacific Standard Time). When it's 9:00 AM in New York (EST), it's 6:00 AM in Los Angeles (PST). During daylight saving time, EDT is 3 hours ahead of PDT.

How do I schedule a meeting across time zones?

Use our meeting planner feature to add all participant locations. The tool shows overlapping hours where everyone is within business hours. Look for times when all participants can attend, or rotate inconvenient times fairly across regions.

What is UTC time?

UTC (Coordinated Universal Time) is the primary time standard and reference point for all time zones. It's roughly equivalent to GMT (Greenwich Mean Time) and doesn't observe daylight saving time, making it ideal for international coordination.

Why do some countries have half-hour time zones?

Political and geographical reasons. Some countries chose offsets like UTC+5:30 (India) or UTC+9:30 (Australia Central) to align with national boundaries, historical reasons, or to provide more suitable time zones for their population.

How does daylight saving time affect time zones?

Daylight Saving Time (DST) shifts clocks forward 1 hour in summer and back in winter. Our time zone converter automatically accounts for DST based on the date, ensuring accurate conversions year-round.

What is the time difference between US and Europe?

Western Europe is typically 5-6 hours ahead of the US East Coast. London (GMT) is 5 hours ahead of New York (EST). Central Europe (CET) is 6 hours ahead. Time differences vary with daylight saving time changes.

Is this time zone converter accurate?

Yes, our time zone converter uses current international time zone standards and automatically adjusts for daylight saving time based on the date. All conversions are accurate and up-to-date for worldwide locations.

How do I convert multiple time zones at once?

Use our meeting planner feature to add multiple locations. The tool displays time conversions for all locations simultaneously, making it easy to coordinate across different time zones and find suitable meeting times.

What happens when crossing the International Date Line?

Crossing the International Date Line east to west adds one day (yesterday becomes today). Crossing west to east subtracts one day (today becomes yesterday). Our time zone converter accounts for this automatically.