Moment of Inertia
Moment of Inertia (Dynamic or Mass)
Metric Unit British Units
Kilogram metre squared
(kg m2)		 Pound foot squared
(lb ft2)		 Pound inch squared
(lb in2)		 Ounce inch squared
(oz in2)
1 Kilogram metre squared
(kg m2)		 1 23.730 4 3417.17 54675
 
1 Pound foot squared
(lb ft2)		 0.042 140 1 1 144 2304
 
1 Pound inch squared
(lb in2)		 0.000 292 640 0.0006 944 4 1 16
 
1 Ounce inch squared
(oz in2)		 0.000 018 290 0.000 434 028 0.062 5 1


Moment of Inertia (Geometrical)
Metric Unit British Units
Centimetre4
(cm4)		 Foot4
(ft4)		 Inch4
(in4)
1 Centimetre4
(cm4)		 1 1.158 62 x 10-6 0.024 025 1
 
1 Foot4
(ft4)		 8.631 0 x 105 1 20736
 
1 Inch4
(in4)		 41.326 1 4.822 53 x 10-5 1