Time Zone Converter
Convert a date and time between any two of 16 global time zones, with full DST support.
Convert a date and time between any two of 16 global time zones, with full DST support.
A time zone converter translates a clock time in one place into the matching local time somewhere else. Every time zone is defined by its offset from Coordinated Universal Time (UTC) — Eastern Standard Time is UTC−5 and India Standard Time is UTC+5:30 — so converting means removing the source offset and applying the destination's. For example, 9:00 AM in New York in January is 14:00 UTC, which is 2:00 PM in London and 7:30 PM in Mumbai.
Daylight Saving Time is the main complication. US clocks spring forward on the second Sunday in March and fall back on the first Sunday in November, while most of Europe changes on the last Sundays of March and October, so for a few weeks each year the New York–London gap is 4 hours instead of 5. Hawaii and most of Arizona never change, and neither do India, Japan, or Dubai. Australia's DST runs during the southern summer, so the gap between the US East Coast and Sydney moves between 14 and 16 hours over a year. Conversions can also cross midnight — a US evening is already the next morning in Tokyo. Remote teams, recruiters setting interviews, travelers, and anyone sending a meeting invite need to get these details right.
To use this time zone converter, pick a date (it defaults to today), enter a time (default 9:00 AM), choose a From zone and a To zone, and press Convert. Sixteen zones are available: Pacific, Mountain, Central, Eastern, Alaska, and Hawaii in the US, plus UTC, London, Paris/Berlin, Istanbul, Dubai, Mumbai/Delhi, Bangkok, Singapore, Tokyo, and Sydney. The result shows the weekday, date, time, and zone abbreviation, so a day change is easy to spot. Choosing the actual meeting date matters, because DST rules are applied for that specific day.
16 zones are available, covering all major US, European, and Asian regions.
Yes — your browser's Intl API applies DST rules automatically.
Yes — enter any date, not just today.
Results are estimates for planning purposes only.
Select a date, enter a time, choose your source time zone, and select the destination zone. The converter handles Daylight Saving Time automatically, so you always get the correct local time regardless of the time of year.
This tool covers 16 major time zones across the US, Europe, and Asia, including full DST support for all North American and European zones.
| Time zone | UTC offset (standard) | UTC offset (DST) | Major cities |
|---|---|---|---|
| Pacific (PT) | UTC−8 | UTC−7 | Los Angeles, Seattle, Las Vegas |
| Mountain (MT) | UTC−7 | UTC−6 | Denver, Phoenix*, Salt Lake City |
| Central (CT) | UTC−6 | UTC−5 | Chicago, Dallas, Houston |
| Eastern (ET) | UTC−5 | UTC−4 | New York, Miami, Atlanta |
| GMT / UTC | UTC+0 | UTC+0 | London (winter), Reykjavik |
| British Summer (BST) | UTC+0 | UTC+1 | London (summer) |
| Central European (CET) | UTC+1 | UTC+2 | Paris, Berlin, Rome |
| Gulf Standard | UTC+4 | No DST | Dubai, Abu Dhabi |
| India Standard | UTC+5:30 | No DST | Mumbai, Delhi, Bangalore |
| China Standard | UTC+8 | No DST | Beijing, Shanghai, Shenzhen |
| Japan Standard | UTC+9 | No DST | Tokyo, Osaka |
| AEST | UTC+10 | UTC+11 | Sydney, Melbourne |
* Phoenix and most of Arizona do not observe DST, remaining at UTC−7 year-round.
| City | Time zone | Local time |
|---|---|---|
| Los Angeles | Pacific | 6:00 AM |
| Denver | Mountain | 7:00 AM |
| Chicago | Central | 8:00 AM |
| New York | Eastern | 9:00 AM (reference) |
| London | GMT/BST | 2:00 PM (winter) / 1:00 PM (summer) |
| Paris | CET/CEST | 3:00 PM (winter) / 2:00 PM (summer) |
| Dubai | GST | 6:00 PM |
| Mumbai | IST | 7:30 PM |
| Tokyo | JST | 11:00 PM |
| Sydney | AEST | 1:00 AM next day |
Enter the date, time, and your source time zone, then select the destination time zone. The converter accounts for Daylight Saving Time automatically using your browser's built-in timezone data.
Daylight Saving Time (DST) is the practice of advancing clocks by one hour during summer months. The US springs forward on the second Sunday in March and falls back on the first Sunday in November. This calculator handles DST automatically for all supported zones.
New York (Eastern) is 5 hours behind London (GMT) in winter, and 4 hours behind during summer when both regions observe DST. The difference changes briefly in spring and fall when the two regions switch DST dates on different days.
UTC (Coordinated Universal Time) is the world's primary time standard. GMT (Greenwich Mean Time) is a time zone that equals UTC in winter. They are effectively the same for most practical purposes, though they differ technically.
The contiguous US has four time zones: Eastern (UTC-5/-4), Central (UTC-6/-5), Mountain (UTC-7/-6), and Pacific (UTC-8/-7). Alaska (UTC-9/-8) and Hawaii (UTC-10, no DST) bring the total to six zones.
Use the Meeting Time Finder tool (linked below) to find windows where all participants are within their working hours. For a quick check, convert your proposed meeting time to each participant's zone using this converter.
DST transitions can cause unexpected results. Double-check whether both zones are currently observing DST, and verify the exact date you're converting — the day before or after a DST change can shift results by an hour.
India Standard Time is UTC+5:30 with no DST, so it is 12.5 hours ahead of Pacific Daylight Time (March to November) and 13.5 hours ahead of Pacific Standard Time. 9:00 AM PDT is 9:30 PM IST the same day; 9:00 AM PST is 10:30 PM IST.