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Time Zone Converter - World Time

Free time zone converter. Convert times between different time zones worldwide. Compare local times across cities and schedule international meetings with ease.

Converted Time
--:--
Select date and time
From
UTC
UTC+0
To
Eastern Time
UTC-5
Time Difference
--

Our free time zone converter helps you coordinate across time zones. Simply select your source and destination time zones, enter a date and time, and instantly see the converted time along with the time difference.

How to use the time zone converter

Using our converter is simple:

  1. Select your starting time zone (where you are or where the event originates)
  2. Enter the date and time you want to convert
  3. Select the destination time zone (where you need to know the time)
  4. See the converted time instantly

Common time zone conversions

From To Typical Difference
New York (ET)London (GMT)+5 hours
Los Angeles (PT)Tokyo (JST)+16 hours
London (GMT)Sydney (AEST)+10-11 hours
Chicago (CT)Paris (CET)+7 hours
India (IST)New York (ET)-9.5 to -10.5 hours

Daylight saving time (DST)

Many countries observe daylight saving time, which shifts clocks forward by one hour during summer months. This affects the offset from UTC:

  • Eastern Time (ET): UTC-5 (EST) / UTC-4 (EDT)
  • Central European Time (CET): UTC+1 (CET) / UTC+2 (CEST)
  • Australian Eastern Time: UTC+10 (AEST) / UTC+11 (AEDT)

Our converter automatically accounts for DST transitions based on the date you select.

UTC and GMT explained

UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks. It is not adjusted for daylight saving time and remains constant year-round.

GMT (Greenwich Mean Time) is often used interchangeably with UTC, though technically GMT refers to the time zone used in the UK during winter months. For practical purposes, UTC and GMT are equivalent.

Tips for scheduling international meetings

  • Check DST transitions — some regions change on different dates
  • Use UTC as a reference point when communicating across multiple time zones
  • Avoid scheduling meetings between 10 PM and 7 AM in any participant's local time
  • Use scheduling tools that display multiple time zones simultaneously
  • Consider recording meetings for those who cannot attend due to time differences

Frequently Asked Questions

How do I convert time between time zones?
Select your source time zone and enter the time, then select the target time zone. The converter calculates the time difference and shows the equivalent local time in the destination zone, accounting for daylight saving time where applicable.
What is UTC and why is it used as a reference?
UTC (Coordinated Universal Time) is the primary time standard used worldwide. It does not observe daylight saving time, making it a stable reference point. All time zones are defined as UTC plus or minus an offset — for example, New York is UTC−5 in winter and UTC−4 in summer.
Does the converter account for daylight saving time?
Yes. The converter uses the current DST rules for each time zone. Daylight saving time shifts clocks forward by 1 hour in spring and back in autumn. Not all countries observe DST — parts of the US, Europe, and Australia do, while most of Asia and Africa do not.
What is the best time to schedule an international meeting?
Aim for times that fall within business hours (9 AM–5 PM) for all participants. Use the converter to check what your proposed time translates to in each attendee's location. Overlapping business hours between, say, London and New York only exist between roughly 2 PM–5 PM GMT.
Why do some time zones have half-hour or 45-minute offsets?
Most time zones are full hours ahead or behind UTC, but some countries use non-standard offsets: India is UTC+5:30, Nepal is UTC+5:45, and parts of Australia use UTC+9:30. These offsets reflect political or geographic decisions rather than strict longitudinal alignment.
What is the international date line?
The International Date Line runs roughly along the 180° meridian in the Pacific Ocean. Crossing it going east subtracts a day; going west adds a day. This is why flying from Los Angeles to Tokyo means you can arrive on a date two days later despite the flight being about 11 hours.

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