Convert times between your home and destination time zones. Enter origin and destination UTC offsets to see the corresponding local times.
Coordinating times across time zones is essential for travel planning. Whether you need to call home during a trip, schedule a meeting with colleagues in another country, or figure out what local time your flight actually arrives, a time zone converter is indispensable.
This calculator converts any time from your origin time zone to your destination time zone using UTC offsets. Enter the time you want to convert, your home UTC offset, and the destination UTC offset. The tool instantly shows the equivalent time at your destination, handling next-day and previous-day rollovers.
For travelers, the most common use is converting flight schedules, business meeting times, and communication windows with family back home. Understanding time differences also helps plan calls, medication schedules, and daily routines across zones. Whether you are a beginner or experienced professional, this free online tool provides instant, reliable results without manual computation. By automating the calculation, you save time and reduce the risk of costly errors in your planning and decision-making process.
Quick, accurate time conversion prevents missed flights, late meetings, and 3 AM phone calls to family. Enter any time and the UTC offsets to instantly see the equivalent time at your destination. Having a precise figure at your fingertips empowers better planning and more confident decisions. Manual calculations are error-prone and time-consuming; this tool delivers verified results in seconds so you can focus on strategy.
Destination Time = Origin Time + (Dest UTC Offset − Origin UTC Offset) Time Difference = Dest Offset − Origin Offset If result > 24:00, it's the next day If result < 0:00, it's the previous day
Result: Destination time: 12:00 AM (midnight, next day)
The time difference is +9 − (−5) = 14 hours. 10:00 AM + 14 hours = 12:00 AM (midnight). When it's 10 AM in New York (UTC-5), it's midnight in Tokyo (UTC+9), which is the next calendar day.
New York to London: +5 hours. New York to Tokyo: +14 hours. Los Angeles to Paris: +9 hours. London to Dubai: +4 hours. Sydney to Los Angeles: -19 hours (previous day).
For a 14-hour difference (New York to Tokyo), the overlap window is roughly 7–9 AM in New York (8–10 PM in Tokyo). For a 5-hour difference (New York to London), overlap is much larger: 9 AM–5 PM New York (2–10 PM London).
Flying from the US to Asia, your arrival date may be 2 calendar days after departure despite only 12–14 hours of flying. Flying back from Asia to the US, you may arrive on the same calendar day you departed (or even "earlier" due to crossing the date line).
US Eastern = UTC-5 (EST) or UTC-4 (EDT). US Central = UTC-6/UTC-5. US Mountain = UTC-7/UTC-6. US Pacific = UTC-8/UTC-7. London = UTC+0/UTC+1. Search "[city] UTC offset" for any location.
The International Date Line runs through the Pacific Ocean at roughly 180° longitude. Crossing it eastward means going back one calendar day; crossing westward means advancing one day. This is why a flight from the US to Asia can "arrive yesterday."
No. India uses UTC+5:30, Nepal uses UTC+5:45, Iran uses UTC+3:30, and parts of Australia use UTC+9:30. These half-hour and quarter-hour offsets make time conversion slightly trickier.
DST shifts the UTC offset by +1 hour during summer months. Not all countries observe DST, and those that do change on different dates. This means the time difference between two cities can vary by 1–2 hours depending on the time of year.
The maximum difference is 26 hours: between UTC-12 (Baker Island) and UTC+14 (Line Islands, Kiribati). Between commonly inhabited places, the maximum is about 25 hours.
Both. Departure time is in the local time of the origin airport, and arrival time is in the local time of the destination airport. This is universal across all airlines and booking platforms.