Which unit is used to measure film size? pixels in cm mm

Mm is the unit used to measure film size. It stands for millimeter.

The standard film size is 35 mm. The standard frame size of a still camera film was 24 x 36 mm.

mm is the smallest unit to measure length of an object. It is followed by cm then in and so on.

1 cm = 10 mm

1 in = 2.54 cm

1 in = 25.4 mm