Pick two UK cities and get the straight-line (as-the-crow-flies) distance in km and miles, the compass direction, the midpoint and a time and fuel estimate — or switch to Romania or Turkey.
iHow it is calculated
The straight-line distance is computed with the haversine formula, from the coordinates (latitude, longitude) of the two cities, on a spherical globe:
d = 2R × arcsin√( sin²(Δφ/2) + cosφ₁·cosφ₂·sin²(Δλ/2) )
For London → Manchester: straight-line ≈ 262 km (163 miles), heading north-west. By road, the real drive is around 335 km.
?Frequently asked questions
What distance does this calculator show?
It shows the straight-line (as-the-crow-flies, great-circle) distance between the centres of two UK cities. It is the shortest distance across the Earth’s surface and matches flight distance, not road distance.
What is the difference between straight-line and road distance?
Straight-line distance is measured directly, “as the crow flies”, while road distance follows real roads and is usually 20–40% longer. For example, London–Manchester is ≈ 262 km straight-line but ≈ 335 km by road.
How far is London from Manchester?
In a straight line, the London–Manchester distance is about 262 km (163 miles), heading north-west. By road, the real drive is around 335 km, depending on the route.
How is the straight-line distance calculated?
It uses the haversine formula, which computes the distance on a spherical globe from the coordinates (latitude and longitude) of the two cities. The calculator uses each city’s centre coordinates.
Is this the driving distance?
No. This calculator shows the straight-line distance, not the driving distance on roads. For exact road distance and real driving time you need a route planner that accounts for roads and traffic.
How is travel time estimated?
Time is estimated by dividing the distance by the average speed you choose (90 km/h by default). It is an estimate for the straight-line distance; real road time varies with the route, traffic and stops.
What is the midpoint used for?
The midpoint is the half-way point along the straight line between the two cities. It is useful, for example, to pick an equidistant meeting place for two people setting off from different cities.
Can I calculate the flight distance between cities?
Yes. The straight-line distance is exactly the great-circle flight distance used in aviation. For cities with an airport, the value shown approximates the distance a plane covers, without air-route deviations.
Which cities are included?
50 major UK cities are included — among them London, Birmingham, Manchester, Leeds, Glasgow, Edinburgh, Liverpool, Bristol, Sheffield and Cardiff. You can also switch the country to Romania or Turkey.
How accurate are the results?
The coordinates come from a geographic database and mark each city’s centre, so the straight-line distance is accurate to within a few kilometres. Road distance and driving time remain estimates only.