1 foot = 304.8 millimeters
Try typing conversion questions into Google - by typing "1 foot in mm" into the normal Google search bar, the built-in Google Calculator gave me the answer.
305mm are in one foot.
304.8 mm
50 mm = 0.164 feet
5000 mm = 16.4 feet
970 mm = 3.18 feet
121 mm is 0.396982 feet.
2,750 mm
1100 mm = 3.6089239 feet
160 mm is about .5249 feet
2340 mm = 7.68 feet
0.00328 feet per mm
899 mm = 2.94948 feet (rounded)