How to Convert Inches to Mm

••• NA/ Images

Working with the metric system sometimes means converting measurements using simple mathematical formulas. Because metric measurements are expressed in units of 10, it is possible to quickly grasp the increasing difference between millimeters, centimeters and meters. Converting a familiar measurement such as inches into millimeters takes only seconds when using the correct multiplication factor.

Things You'll Need

  • Tape measure or ruler
  • Calculator

    Measure the distance to be converted from inches, using a ruler or tape measure. For example, a CD jewel case is 5 inches wide and 5 inches long.

    Multiply the number of inches by 25.4 to convert to millimeters.

    Use the example to understand the conversion: A CD jewel case 5 inches wide times 25.4 equals 127 mm. As an equation, it is expressed like this: 5 x 25.4 = 127.


    • Divide the total millimeters by 25.4 to convert the measurement back to inches.

Related Articles

How to Convert Radians to Degrees
How to Convert Decimal Inches into Mm
How to Find the Volume of a Sphere in Terms of Pi
How to Convert Centimeters to Meters
How to: Improper Fractions Into Proper Fractions
How to Convert Inches to 16ths of an Inch
How to Find the Area of Squares
How to Change MSF to Linear Feet
How to Convert Taper to Degrees
How to Convert Pounds Per Square Foot to PSI
How to Measure Meters in Feet
How to Convert FT LB to IN LB
How to Calculate Cubic Yards
How to Convert an Area to Square Feet
How to Convert BTU to MCF
How to Convert Inches to the Metric System
How to Calculate Circumference in Inches
How to Convert Lux to Candela

Dont Go!

We Have More Great Sciencing Articles!