How far is Decatur, GA from Alpharetta, GA?

Distance by Flight

Shortest distance between Decatur and Alpharetta is 20.77 miles (33.42 km).

Flight distance from Decatur, GA to Alpharetta, GA is 20.77 miles. Estimated flight time is 00 hours 03 minutes.

Driving distance

The driving distance from Decatur, Georgia to Alpharetta, Georgia is: 29.23 miles (47.05 km) by car.

Driving from Decatur to Alpharetta will take approximately 00 hours 37 minutes.

Alpharetta image
#1 Decatur

County seat of DeKalb County, Georgia, United States

Population 25655
GPS Coordinates 33°46'29"N 84°17'47"W
Latitude 33.7748300
Longitude -84.2963100
Altitude 318
Country United States
Alpharetta image
#2 Alpharetta

The most populous city in Fulton County, Georgia. It is located in the northern suburbs of Atlanta. Alpharetta is known for its many parks and green spaces, its many historical sites, and its many attractions, such as the Alpharetta Arts Council and the Alpharetta City Hall.

Population 67897
GPS Coordinates 34°4'31"N 84°17'39"W
Latitude 34.0753800
Longitude -84.2940900
Altitude 347
Country United States

Estimated Travel Time Between Decatur and Alpharetta

The distance between Decatur and Alpharetta is 47 km if you choose to drive by road. You can go 00 hours 31 minutes if you drive your car at an average speed of 90 kilometers / hour. For different choices, please review the avg. speed travel time table on the below.

There is no time difference between Decatur and Alpharetta. The current time is 20:50:11.

Average Speed Travel Time
30 mph (48.3 km/h) 00 hours 58 minutes
40 mph (64.37 km/h) 00 hours 43 minutes
50 mph (80.47 km/h) 00 hours 35 minutes
60 mph (96.56 km/h) 00 hours 29 minutes
70 mph (112.65 km/h) 00 hours 25 minutes
75 mph (120.7 km/h) 00 hours 23 minutes
80 mph (128.75 km/h) 00 hours 21 minutes

Gas Consumption

A car with a fuel efficiency of 8.3 l/100 km will need 3.9 liters (1.03 gallon) of gas to cover the route between Decatur and Alpharetta.
The estimated cost of gas to go from Decatur to Alpharetta is $3.09 (diesel $4.21).

Georgia gas prices.

Gasoline Mid Grade Premium Diesel
Gallon $3 $3.43 $3.82 $4.08
Total $3.09 $3.54 $3.94 $4.21

Take a look at our Gas Cost Calculator feature. It will figure out how much it will cost to drive this particular distance.

The average gas price (in Georgia ) per gallon of daily gas for calculations is $2.995 (Diesel $4.079) /gallon. Last changed prices on December 26, 2024.

How did we calculate the distance?

The place names are translated into coordinates to approximate the distance between Decatur and Alpharetta (latitude and longitude). Cities, states, and countries each have their own regional center. The Haversine formula is used to measure the radius.

Distance to Other Cities

Alpharetta image

Driving distance from Smyrna, GA to Decatur 62.03 miles (100 km)

Alpharetta image

Driving distance from Albany, GA to Decatur 186.77 miles (301 km)

Alpharetta image

Driving distance from Atlanta, GA to Decatur 8.15 miles (13 km)

Alpharetta image

Driving distance from Augusta, GA to Decatur 144.35 miles (232 km)

Alpharetta image

Driving distance from Brookhaven, GA to Decatur 7.68 miles (12 km)

Driving distance from California, GA to Decatur 35.08 miles (56 km)

Alpharetta image

Driving distance from Columbus, GA to Decatur 114.91 miles (185 km)

Alpharetta image

Driving distance from Dunwoody, GA to Decatur 15.75 miles (25 km)

Alpharetta image

Driving distance from Gainesville, GA to Decatur 49.73 miles (80 km)

Alpharetta image

Driving distance from Macon, GA to Decatur 88.24 miles (142 km)

Alpharetta image

Driving distance from Marietta, GA to Decatur 25.33 miles (41 km)

Driving distance from Minnesota, GA to Decatur 196.22 miles (316 km)

Gas Cost Calculator