Air Miles Calculator

Distance between Grand Rapids, MI (GRR) and Decatur, IL (DEC)

Distance from Grand Rapids to Decatur (Gerald R. Ford International Airport – Decatur Airport) is 273 miles / 439 kilometers / 237 nautical miles.

How far is Decatur from Grand Rapids?

There are several ways to calculate distances between Grand Rapids and Decatur. Here are two common methods:

Vincenty's formula (applied above)
  • 272.720 miles
  • 438.901 kilometers
  • 236.987 nautical miles

Vincenty's formula calculates the distance between latitude/longitude points on the earth’s surface, using an ellipsoidal model of the earth.

Haversine formula
  • 272.631 miles
  • 438.757 kilometers
  • 236.910 nautical miles

The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance – the shortest distance between two points).

Flight duration

Estimated flight time from Gerald R. Ford International Airport (GRR) to Decatur Airport (DEC) is 1 hour 0 minutes.

Time difference and current local times

The time difference between Grand Rapids and Decatur is 1 hour. Decatur is 1 hour behind Grand Rapids.

Time Difference

Grand Rapids
Decatur

Grand Rapids, MI

 EST

Decatur, IL

 CST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 63 kg (138 pounds).

Airport information


A Gerald R. Ford International Airport
City: Grand Rapids, MI
Country: United States Flag of United States
IATA Code: GRR
ICAO Code: KGRR
Coordinates: 42°52′50″N, 85°31′22″W

B Decatur Airport
City: Decatur, IL
Country: United States Flag of United States
IATA Code: DEC
ICAO Code: KDEC
Coordinates: 39°50′4″N, 88°51′56″W

Map

Grand Rapids to Decatur flight map.

Frequent Flyer Miles Calculator

Grand Rapids (GRR) → Decatur (DEC).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
273
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
273

Round trip?