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# Conversion Table Factors

 Weights of Steel Units of Volume to Weight Multiply By Cubic centimeters to kilograms (Kg) 0.00784 Cubic meters to tons 7.8417 Cubic inches to pounds (lb) 0.2833 Cubic feet to pounds (LB) 490.0 Cubic feet to tons 0.21875 Cubic feet to U.S. short tons 0.245 Formula Round bar, kg per lineal meter (diameter in mm) 2 x 0.00616 Hexagon bar, kg per lineal meter (across flats in mm) 2 x 0.00680 Square bar, kg per lineal meter (across flats in mm) 2 x 0.00784 Round bar, lbs per lineal foot (diameter in inches) 2 x 2.670 Hexagon bar, lbs per lineal foot (across flats in inches) 2 x 2.944 Square bar, lbs per lineal foot (across flats in inches) 2 x 3.400
 Temperature Conversion Centigrade (C) to Fahrenheit (F) (C x 9/5 )+ 32 Fahrenheit (F) to Centigrade (C) 5/9 (F – 32)
 Comparison of Surface Finishes Roughness Grade No. N1 N2 N3 N4 N5 N6 N7 N8 N9 N10 N11 Ra (micro-meters) 0.025 0.050 0.1 0.2 0.4 0.8 1.6 3.2 6.3 12.5 20.0 CLA (micro-inches) 1 2 4 8 16 32 63 125 250 500 1000

Note: Where tons are referred to, these are Imperial U.K. tons, equal to 2240 lbs. US Short tons are equal to 2000 lbs. A ton is equal to 1000 kilograms. Some of the conversion figures given have been rounded and should therefore be used as a guideline only.

 Units of Length Multiply by Millimeters to inches 0.03937 Inches to millimeters 25.4 Centimeters to inches 0.3937 Inches to centimeters 2.54 meters to feet 3.2808 Feet to meters 0.3048
 Units of Area Multiply by Square millimeters to square inches 0.00155 Square inches to square millimeters 645.160 Square centimeters to square inches 0.1550 Square inches to square centimeters 6.4516 Square meters to square feet 10.7636 Square feet to square meters 0.0929
 Units of Weight Multiply by Grams to pounds (LB .002205 Pounds (LB) to grams 453.5 Kilograms to pounds (LB) 2.205 Pounds (LB) to kilograms 0.4535 Kilograms to tons 0.0009842 Tons to kilograms 1016.05 Kilograms to US short tons 0.0011023 US short tons to kilograms 907.185
 Units of Force and Pressure Multiply by Newtons (N) to kilograms force (Kg.f.) 0.10197 Kilograms force (Kg.f.) to Newtons (N) 9.80661 Newtons (N) to pounds force (lb.f.) 0.225 Pounds force (lb.f.) To Newtons (N) 4.448 Kilogram meters (kg.f.m.) To pounds feet (lb.f.ft.) 7.233 Pounds feet (lb.f.ft.) To kilogram meters (kg.f.m.) 0.138 Newton meters (N.m.) To pound inches (lb.f.in.) 8.851 Pound inches (lb.f.in.) To Newton meters (N.m) 0.113 Newton meters (N.m.) To pounds feet (lb.f.ft.) 0.738 Pounds feet (lb.f.ft.) To Newton meters (N.m.) 1.356 Newtons per sq. mm (N/mm2) to pounds per sq. inch (LB/in2) 145.03 Pounds per sq. inch (LB/in2) to Newtons per sq. mm (N/mm2) 0.006895 Newtons per sq. mm (N/mm2) to tons per sq. inch (Ton.f/in2) 0.06475 Tons per sq. inch (Ton.f/in2) to Newtons per sq. mm (N/mm2) 15.444 Newtons per sq. mm (N/mm2) to US short tons per sq. inch (Ton.f/in2) 0.07252 US short tons per sq. inch (Ton.f/in2) to Newtons per sq. mm (N/mm2) 13.789 Kilograms per sq. mm (Kg/mm2) to pounds per sq. inch (LB/in2) 1422.335 Pounds per sq. inch (LB/in2) to kilograms per sq. mm (kg/mm2) 0.000703 Kilograms per sq. mm (Kg/mm2) to tons per sq. inch (Ton/in2) 0.6350 Tons per sq. inch (Ton/in2) to kilograms per sq. mm (kg/mm2) 1.5748 Kilograms per sq. mm (Kg/mm2) to US short tons per sq. inch (Ton/in2) 0.7112 US short tons per sq. inch (Ton/in2) to kilograms per sq. mm (kg/mm2) 1.406