Conversion Tables

Convert	*Multiply by*	Convert	*Multiply By*
Length
Inches to millimetres	25.4	Millimetres to inches	0.03937
Feet to metres	0.3048	Metres to feet	3.281
Area
Square inches to square millimetres	645.2	Square millimetres to square feet	0.00155
Square feet to square metres	0.0929	Square metres to square feet	10.764
Volume
Cubic feet to cubic metres	0.02832	Cubic metres per sec. to cubic feet per min.	35.315
Cubic feet to litres	28.31	Litres per sec. to cubic feet per min	0.0353
Gallons (UK) to litres	4.546	Litres to gallons (UK)	0.22
Mass
Ounces to grams	28.35	Grams to ounces	0.03527
Pounds to kilograms	0.4536	Kilograms to pounds	2.205
Tons to tonnes	1.016	Tonnes to tons	0.9842
Volume flow
Cubic feet per min. to cubic metres per sec	0.000472	Cubic metres per sec. to cubic feet per min	2119
Cubic feet per min. to litres per sec	0.4719	Litres per sec. to cubic feet per min	2119
Motion
Feet per min. to metres per sec	0.00508	Metres per sec to feet per min	197
Pressure
Inches water gauge to millibars	2.491
Inches water gauge to pascals (Pa)	249.1
1 Pa = 1 Newton per sq. metre = 10² millibars
Duty x temp rise x 1.25 = KW req.