How to find out distance between coordinates?

Question

I want to make it so that it will show the amount of distance between two CLLocation coordinates. Is there someway to do this without a complex math formula? If there isn't how would you do it with a formula?

Solution 1

CLLocation has a distanceFromLocation method so given two CLLocations:

CLLocationDistance distanceInMeters = [location1 distanceFromLocation:location2];

or in Swift 4:

//: Playground - noun: a place where people can play

import CoreLocation


let coordinate₀ = CLLocation(latitude: 5.0, longitude: 5.0)
let coordinate₁ = CLLocation(latitude: 5.0, longitude: 3.0)

let distanceInMeters = coordinate₀.distance(from: coordinate₁) // result is in meters

you get here distance in meter so 1 miles = 1609 meter

if(distanceInMeters <= 1609)
 {
 // under 1 mile
 }
 else
{
 // out of 1 mile
 }

Solution 2

Swift 4.1

import CoreLocation

//My location
let myLocation = CLLocation(latitude: 59.244696, longitude: 17.813868)

//My buddy's location
let myBuddysLocation = CLLocation(latitude: 59.326354, longitude: 18.072310)

//Measuring my distance to my buddy's (in km)
let distance = myLocation.distance(from: myBuddysLocation) / 1000

//Display the result in km
print(String(format: "The distance to my buddy is %.01fkm", distance))

Solution 3

Try this out:

distanceInMeters = fromLocation.distanceFromLocation(toLocation)
distanceInMiles = distanceInMeters/1609.344

From Apple Documentation:

Return Value: The distance (in meters) between the two locations.

Solution 4

import CoreLocation

//My location
let myLocation = CLLocation(latitude: 31.5101892, longitude: 74.3440842)

//My Next Destination
let myNextDestination = CLLocation(latitude: 33.7181584, longitude: 73.071358)

//Finding my distance to my next destination (in km)
let distance = myLocation.distance(from: myNextDestination) / 1000

Solution 5

func calculateDistanceInMiles(){

    let coordinate₀ = CLLocation(latitude:34.54545, longitude:56.64646)
    let coordinate₁ = CLLocation(latitude: 28.4646, longitude:76.65464)
    let distanceInMeters = coordinate₀.distance(from: coordinate₁)
    if(distanceInMeters <= 1609)
    {
        let s =   String(format: "%.2f", distanceInMeters)
        self.fantasyDistanceLabel.text = s + " Miles"
    }
    else
    {
        let s =   String(format: "%.2f", distanceInMeters)
        self.fantasyDistanceLabel.text = s + " Miles"

    }
}

View more solutions

Comments

[John Doe]

How would I convert this into miles?

[John Doe]

Is there a way to turn it into miles?

[John Doe]

Oh wait I got it! Thanks. (:

[Glenn Howes]

According to Google, there are 0.000621371 miles in a meter. So, I'd suggest multiplying it by 0.000621371.

[John Doe]

Ok great, thanks! I'll accept your answer in a few minutes when it will let me.

[vijay]

some times its showing wrong distance i checked with google map with same locations which i have given the same locations in the code. please any other way to calculate distance let me know please.

[Glenn Howes]

Well, how far off is it?

[Dory Daniel]

the question here is captioned with 'swift'. So maybe you need to update your answer, or add "For objective-c :" @Vijay

[AnBisw]

Also from apple docs - "This method measures the distance between the two locations by tracing a line between them that follows the curvature of the Earth. The resulting arc is a smooth curve and does not take into account specific altitude changes between the two locations."developer.apple.com/documentation/corelocation/cl‌​location/…

[AnBisw]

This is not the true distance "By road" According to apple Docs - "This method measures the distance between the two locations by tracing a line between them that follows the curvature of the Earth. The resulting arc is a smooth curve and does not take into account specific altitude changes between the two locations." developer.apple.com/documentation/corelocation/cllocation/… .. so if you're looking for driving distance, the reliable way to find the correct distance so far has been Google Maps Distance Matrix API or MKRoute.

[Glenn Howes]

@Annjawn That really has nothing to do with the question as asked.

[AnBisw]

@GlennHowes yes it does, chances are that the OP is trying to find the driving (or other mode of transport) distance between two points in which case just a Geospatial distance as is derived by distanceFromLocation will be completely incorrect. For Driving distance, the correct implementation would be to use MKRoute which will give you the "Route Distance" distance in meters along with other stuff like expected travel time, transport type etc - developer.apple.com/documentation/mapkit/mkroute

[AnBisw]

And as reported by @vijay (in comments above) this is the reason why his distances are incorrect when compared to Google Map. Google map and MKRoute will consider the route information to calculate the actual transport distance whereas the simple distanceFromLocation won't, so I suggest you update your answer to clarify this in order to avoid confusing people who reach this page through google.

[Muhammed]

How can i do that with a place with 2 Coordinates ?

[rollstuhlfahrer]

While this code may answer the question, providing additional context regarding why and/or how this code answers the question improves its long-term value.

[Glenn Howes]

No, it's just a math calculation. It isn't a turn by turn database lookup.

[Gurjinder Singh]

let distanceInMiles = coordinate.distance(from:currentDeviceCoordinate) / 1609.344 // result is in miles

[koen]

While this code may answer the question, it would be better to explain how it solves the problem without introducing others and why to use it. Code-only answers are not useful in the long run.

[thetrutz]

Good, that you use the correct factor 1609.344. en.wikipedia.org/wiki/Mile

[gyratory circus]

For iOS 10+, it would be useful to perform the conversion to miles via the Measurement class: let miles = Measurement(value: meters, unit: UnitLength.meters).converted(to: UnitLength.miles).value