How far is Rockford from Newark?
There are several ways to calculate distances between Newark and Rockford. Here are two common methods:Vincenty's formula (applied above)
- 781.068 miles
- 1257.007 kilometers
- 678.729 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
- 779.102 miles
- 1253.844 kilometers
- 677.021 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).
Estimated flight time from Newark Liberty International Airport (EWR) to Chicago Rockford International Airport (RFD) is 1 hour 58 minutes.
Time difference and current local times
The time difference between Newark and Rockford is 1 hour. Rockford is 1 hour behind Newark.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 133 kg (293 pounds).
Newark to Rockford flight map.
Frequent Flyer Miles Calculator
Newark (EWR) → Rockford (RFD).