Common Conversion Factors

COMMON CONVERSION FACTORS

To Convert

Into

Multiply By

Centigrate

Fahrenheit

(*C + 32) x 1.8

Centimeters

Inches

0.3937

Centimeters

Millimeters

10

Circular Mils

Square Inches

7.854 x 10^-7

Circular Mils

Square Millimeters

5.067 x 10^-4

Fahrenheit

Centigrade

(*F - 32) / 18

Horsepower (electric)

Watts

746

Inches

Centimeters

2.54

Inches

Millimeters

25.4

Inches

Mils

1,000

Millimeters

Centimeters

0.1

Millimeters

Inches

0.03937

Millimeters

Mils

39.37

Mils

Centimeters

2.54 x 10^-3

Mils

Inches

0.001

Mils

Millimeters

2.54 x 10^-4

Square Inches

Circular Mils

1.273 x 10⁶

Sqare Inches

Square Millimeters

645.16

Square Millimeters

Circular Mils

1,973.5

Square Millimeters

Square Inches

1.550 x 10^-3

Watts

Horsepower (electric)

1.340 x 10^-3
.

Note: Boldface denotes an exact conversion.

To Convert	Into	Multiply By

Centigrate	Fahrenheit	*(C + 32) x 1.8**

Centimeters	Inches	0.3937

Centimeters	Millimeters	10

Circular Mils	Square Inches	7.854 x 10^-7

Circular Mils	Square Millimeters	5.067 x 10^-4

Fahrenheit	Centigrade	*(F - 32) / 18**

Horsepower (electric)	Watts	746

Inches	Centimeters	2.54

Inches	Millimeters	25.4

Inches	Mils	1,000

Millimeters	Centimeters	0.1

Millimeters	Inches	0.03937

Millimeters	Mils	39.37

Mils	Centimeters	2.54 x 10^-3

Mils	Inches	0.001

Mils	Millimeters	2.54 x 10^-4

Square Inches	Circular Mils	1.273 x 10⁶

Sqare Inches	Square Millimeters	645.16

Square Millimeters	Circular Mils	1,973.5

Square Millimeters	Square Inches	1.550 x 10^-3

Watts	Horsepower (electric)	1.340 x 10^-3