Mm is short for millimeters In 1 centimeter there is 10 millimeters So in 100 centimeters there is 1 thousand millimeters Usually you just add a zero
10 mm = 1cm 1 in = 2.54 cm 1 in = 25.4 mm
90 mm
16.5 mm
304.8 mm
8500 mm
135 mm.
6450 mm
100 mm
153 mm
760 mm
50.8 mm
1290 mm