Frequently Asked Questions
What is the distance between Achi, Kōchi, Japan and Seoul, South Korea?
The straight-line (great-circle) distance between Achi, Kōchi, Japan and Seoul, South Korea is 990 kilometres (615 miles). This is the shortest possible distance between the two points on Earth's surface, calculated using the haversine formula based on precise latitude and longitude coordinates.
How long does it take to fly from Achi, Kōchi, Japan to Seoul, South Korea?
At an average commercial jet speed of 900 km/h, the estimated flight time from Achi to Seoul is approximately 1.1 hours. This excludes takeoff, landing, taxi time, and potential layovers. Actual flight duration may vary depending on aircraft type, routing, weather conditions, and air traffic.
What is the time difference between Achi, Kōchi, Japan and Seoul, South Korea?
The time difference between Achi, Kōchi, Japan and Seoul, South Korea is +0h. Seoul is +0h ahead of Achi. This difference is important to consider when scheduling calls, meetings, or travel between the two cities.
Is the distance shown the same as driving distance?
No. The distance shown is the straight-line distance (also called "as the crow flies" or great-circle distance). Actual driving distance would be longer due to roads, terrain, and geographic obstacles. Flight routing may also differ from the straight-line path due to air traffic corridors, weather, and political airspace restrictions.
How accurate is this distance calculator?
Our calculator uses precise latitude and longitude coordinates from a database of over 150,000 cities worldwide and applies the haversine formula. This method is accurate to within a fraction of a percent for Earth-scale distances, making it suitable for travel planning, logistics, and general reference.
What are the coordinates of Achi and Seoul?
Achi is located at approximately 35.44388889°N, 137.74750000°E. Seoul is located at approximately 37.56600000°N, 126.97840000°E. These coordinates are used to calculate the precise great-circle distance between the two cities.