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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