It is even cooler than that. 1 milliradian is simply the distance (radius) divided by 1000, regardless of the unit of measure. So 1 km / 1000 = 1 m. At 100 m,

It is even cooler than that. 1 milliradian is simply the distance (radius) divided by 1000, regardless of the unit of measure. So 1 km / 1000 = 1 m. At 100 m, 1 milliradian is 1 cm. At 1000 yards 1 milliradian is 1 yard. At 1 mile (5280 feet), 1 milliradian is 5.280 feet.