Conversion Factors

	To convert	Multiply by	To convert	Multiply by
Area	sq in to sq mm	645.16	sq mm to sq in	0.00155
	sq ft to sq m	0.0929	sq m to sq ft	10.76
Length	in to mm	25.40	mm to in	0.0394
	yds to m	0.914	m to yards	1.094
	fathoms to m	1.8288	m to fathoms	0.5468
	nautical miles (M) to kilometres	1.852	kilometres to nautical miles	0.539957
Velocity	nautical miles to statute miles (1 cable equals 0.1 M, approx 185m)	1.1515	statute miles to nautical miles	0.8684
	ft/sec to m/sec	0.3048	m/sec to ft/sec	3.281
	ft/sec to miles/hr	0.682	miles/hr to ft/sec	1.467
	ft/min to m/sec	0.0051	m/sec to ft/min	196.8
	knots to miles/hr	1.1515	miles/hr to knots	0.868
Mass	knots to km/hr	1.852	km/hr to knots	0.54
	lb to kg	0.4536	kg to lb	2.205
Pressure	tons to tonnes (1000 kg)	1.016	tonnes to tons (2240 lb)	0.9842
	inches of mercury to millibars	33.86	millibars to inches of mercury	0.0295
Volume	lb/sq in to kg/sq cm	0.0703	kg/sq cm to lb/sq in	14.22
	lb/sq in to atmospheres	0.068	atmospheres to lb/sq in	14.7
	cu ft to galls	6.25	galls to cu ft	0.16
Capacity	cu ft to litres	28.33	litres to cu ft	0.035
	pints to litres	0.568	litre to pints	1.76
	galls to litres	4.546	litres to galls	0.22
	Imp galls to US galls	1.2	US galls to Imp galls	0.833