…
--:--
…
--:--
Your result appears here.
About the Time Difference Calculator
The time difference calculator shows how many hours apart two places are and converts any time from one time zone to another. It doubles as a time zone converter for meetings, calls and travel.
Two live clocks at the top show the current time, date and UTC offset in both places. The “From” location starts on your own time zone, detected from your device. The “To” list has more than 100 cities plus UTC. Enter a date and time for the “From” location, or press “Use the time right now”, and the result shows the same moment in the “To” location.
The result lists the time difference in hours, both UTC offsets and the same moment in UTC. The swap button switches the two locations and keeps the moment the same. Time zone data comes from the IANA time zone database built into your browser, so daylight saving changes are applied for the exact date you choose.
How to Use the Time Zone Converter
- Choose the “From” location.
- Choose the “To” location.
- Enter the date and time in the “From” location, or press “Use the time right now”.
- Read the converted time and the difference in hours.
How to Calculate the Time Difference Between Two Cities
Every time zone is an offset from Coordinated Universal Time (UTC). To find the difference, subtract one offset from the other.
New York (winter): UTC−5
Difference: 9 − (−5) = 14 hours
Tokyo is 14 hours ahead of New York in winter
To convert a time, add the difference if the other place is ahead, or subtract it if the other place is behind. Check the date as well. 9:00 PM in New York is 11:00 AM the next day in Tokyo.
Current Time Difference in Major Cities
This table shows the current local time, UTC offset and difference from your own time zone for major cities. It updates when the page loads.
| City | Local time | UTC offset | Difference from you |
|---|---|---|---|
| New York | Sun 2:08 AM | UTC−5 | Same time |
| Chicago | Sun 1:08 AM | UTC−6 | −1 h |
| Denver | Sun 12:08 AM | UTC−7 | −2 h |
| Phoenix | Sun 12:08 AM | UTC−7 | −2 h |
| Los Angeles | Sat 11:08 PM | UTC−8 | −3 h |
| Anchorage | Sat 10:08 PM | UTC−9 | −4 h |
| Honolulu | Sat 9:08 PM | UTC−10 | −5 h |
| Toronto | Sun 2:08 AM | UTC−5 | Same time |
| Mexico City | Sun 1:08 AM | UTC−6 | −1 h |
| São Paulo | Sun 4:08 AM | UTC−3 | +2 h |
| London | Sun 7:08 AM | UTC+0 | +5 h |
| Paris | Sun 8:08 AM | UTC+1 | +6 h |
| Berlin | Sun 8:08 AM | UTC+1 | +6 h |
| Lagos | Sun 8:08 AM | UTC+1 | +6 h |
| Cairo | Sun 9:08 AM | UTC+2 | +7 h |
| Johannesburg | Sun 9:08 AM | UTC+2 | +7 h |
| Moscow | Sun 10:08 AM | UTC+3 | +8 h |
| Dubai | Sun 11:08 AM | UTC+4 | +9 h |
| Karachi | Sun 12:08 PM | UTC+5 | +10 h |
| New Delhi | Sun 12:38 PM | UTC+5:30 | +10.5 h |
| Dhaka | Sun 1:08 PM | UTC+6 | +11 h |
| Bangkok | Sun 2:08 PM | UTC+7 | +12 h |
| Singapore | Sun 3:08 PM | UTC+8 | +13 h |
| Manila | Sun 3:08 PM | UTC+8 | +13 h |
| Beijing | Sun 3:08 PM | UTC+8 | +13 h |
| Tokyo | Sun 4:08 PM | UTC+9 | +14 h |
| Sydney | Sun 6:08 PM | UTC+11 | +16 h |
| Auckland | Sun 8:08 PM | UTC+13 | +18 h |
Local times, offsets and differences update to your own time zone when the page loads, and daylight saving time is applied automatically. Differences shown relative to US Eastern time.
What UTC and GMT Mean
UTC, Coordinated Universal Time, is the world time standard kept by atomic clocks and coordinated by the International Bureau of Weights and Measures. All time zones are written as UTC plus or minus a number of hours.
GMT, Greenwich Mean Time, is the older standard based on the sun at Greenwich, England. For daily use, GMT and UTC show the same time. Aviation and the military call UTC “Zulu time”, written with a Z, such as 1400Z.
Not every offset is a whole hour. India uses UTC+5:30, Nepal uses UTC+5:45 and the Chatham Islands of New Zealand use UTC+12:45.
How Daylight Saving Time Changes the Difference
The time difference between two places changes when one place moves its clocks and the other does not.
- The United States uses daylight saving time from the second Sunday in March to the first Sunday in November.
- The European Union changes clocks on the last Sunday in March and the last Sunday in October.
- Arizona (except the Navajo Nation), Hawaii, Japan, China, India and Pakistan do not use daylight saving time.
- Southern Hemisphere countries such as Australia and New Zealand change clocks in the opposite season.
Because of these rules, New York and London are 5 hours apart for most of the year but 4 hours apart for a few weeks in March and in late October. The converter applies the correct rule for each date.
US Time Zones
The United States and its territories use nine standard time zones, overseen by the Department of Transportation.
- Eastern Time: UTC−5, or UTC−4 in summer
- Central Time: UTC−6, or UTC−5 in summer
- Mountain Time: UTC−7, or UTC−6 in summer (Phoenix stays on UTC−7)
- Pacific Time: UTC−8, or UTC−7 in summer
- Alaska Time: UTC−9, or UTC−8 in summer
- Hawaii Aleutian Time: UTC−10 (Honolulu does not change)
- Atlantic Time: UTC−4 (Puerto Rico, US Virgin Islands)
- Samoa Time: UTC−11
- Chamorro Time: UTC+10 (Guam, Northern Mariana Islands)
Frequently Asked Questions
What is a time difference calculator?
A time difference calculator is a tool that shows how many hours apart two locations are. It also converts a time in one location to the matching time in the other.
What is a time zone converter?
A time zone converter changes a date and time from one time zone into another. This page combines a time zone converter with live clocks for both locations.
How do I calculate the time difference between two cities?
Find each city’s UTC offset and subtract one from the other. Tokyo at UTC+9 and London at UTC+0 are 9 hours apart. The calculator above does this live and includes daylight saving time.
Why does the time difference change during the year?
Countries start and end daylight saving time on different dates, and some never use it. When one place changes its clocks and the other does not, the difference grows or shrinks by one hour.
Is New York always 5 hours behind London?
No. New York is usually 5 hours behind London, but for a few weeks in March and in late October to early November it is 4 hours behind, because the US and Europe change clocks on different dates.
What does UTC+5:30 mean?
UTC+5:30 means local time is 5 hours and 30 minutes ahead of Coordinated Universal Time. India uses UTC+5:30 all year.
How many time zones are there in the world?
There are 24 one hour zones in theory, but around 38 different local time offsets are in use, because some regions use half hour or 45 minute offsets.