Inch to mm conversion: inches to millimeters calculator

Inch to mm (inches to millimeters) conversion calculator mm to inches (Swap units) Buy digital tape measures here (sponsored link) 1in = 25.4mm Accuracy Note: You can increase or decrease the accuracy of this answer by selecting the number of significant figures required from the options above the result. Inches to Millimeters conversion formula Millimeters = Inches * 25.4 Inches to Millimeters calculation Millimeters = Inches * 25.4 Millimeters = 1 * 25.4 Millimeters = 25.4 How do you convert inches to millimeters? To convert inches to mm you need to multiply the value in mm by 25.4 as there are this many millimeters in an inch. For example, suppose you have a length of 100 inches and you want to convert it to millimeters: multiply 100 by 25.4 which gives you 2,540mm. To make the conversion easier, you can use the inches to millimeters conversion calculator provided on this page. This tool will calculate the value for you and you can also enter the inch value in fractional form if req...