An inch is equal to 25.4 mm.
How many mm in 1 inch?
Unit System | Units Examples |
The metric system | millimeters (mm), centimeter (cm), decimeter (dm), meter (m), dekameter (dam), hectometer (hm), and so on. |
Imperial units | inch (″), foot (ft), yard (yd), mile, nautical mile (nm), fathom, furlong, Thousandth of an inch… |
The Chinese system | li, zhang, chi, cun, fen… |
What is 1 inch in millimeters?
But how many mm in one inch? As we know, based on the basic formula that there are 25.4 millimeters in 1 inch. Let’s convert – 1 inch is equal to how many millimeters? Then we’ll try more exercise.
So,
. 1 inch = 25.4 millimeters
. or 1 in = 25.4 mm
1 inch = 1 in ✖️ 25.4 mm = 25.4 millimeters
(PS: mm = millimeter(plural: millimeters), in = inch (plural: inches))
1 inch = 25.4 millimeters
More exercise:
3 inches is how many mm?
. 1 inch = 25.4 millimeters
. or 1 in = 25.4 mm
3 inches = 3 in ✖️ 25.4 mm = 76.2 mm
3 inches = 76.2 mm
How Many Millimeters in 1 Inch – Video
Got a different answer? Which unit system do you use or prefer?
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