100mm is 10cm, or 1/10th of a metre. 1 metre would be 1000mm There are 10mm in every 1cm, so10 x 10 = 100There are 100mm in 10cm 1 cm = 10 mm ⇒ 100 cm = 100 x 10 mm = 1000 mm, 28 millimeters = 1.1023622 inches, or about 1 3/32"FYI: Google "convert 28 mm to inches"Direct Conversion Formula28 mm*1 in25.4 mm=1.102362205in, To convert millimeters to inches, you need to know that 1 inch is equal to 25.4 millimeters. Therefore, to convert 128 mm to inches, you would divide 128 by 25.4., 35mm X 22mm = 770 Sq/mm = 1.193502 Sq/Inches Do not think you can convert Sq/mm to just Inches., To convert millimeters to inches, you can use the conversion factor where 1 millimeter is equal to about 0.03937 inches. Thus, multiplying 5 mm by this factor gives you the inch equivalent., This gives approximately 55.12 inches for 1400 mm and about 27.56 inches for 700 mm. Converting these to feet and inches, 1400 mm is roughly 4 feet 7 inches, and 700 mm is about 2 feet 3.5 inches..