Summary Table Of Conversion Factors Most Often Required

x means 'multiply by' . . .
/ means 'divide by' . . .
# means it is an exact value
All other values given to an appropriate degree of accuracy.

To change	into	do this		To change	into	do this
yd3	m3	x 0.7646		m3	yd3	x 1.3080

To change	into	do this		To change	into	do this
acres	hectares	x 0.4047		acres	sq. kilometres	/ 247
acres	sq. metres	x 4047		acres	sq. miles	/ 640 #
barrels (oil)	cu.metres	/ 6.29		barrels (oil)	gallons	x 42 #
barrels (oil)	litres	x 159		centimetres	feet	/ 30.48 #
centimetres	inches	/ 2.54 #		centimetres	metres	/ 100 #
centimetres	millimetres	x 10 #		cubic cm	cubic inches	x 0.06102
cubic cm	litres	/ 1000 #		cubic cm	millilitres	x 1 #
cubic feet	cubic inches	x 1728 #		cubic feet	cubic metres	x 0.0283
cubic feet	cubic yards	/ 27 #		cubic feet	gallons	x 7.481
cubic feet	litres	x 28.32		cubic inches	cubic cm	x 16.39
cubic inches	litres	x 0.01639		cubic metres	cubic feet	x 35.31
feet	centimetres	x 30.48 #		feet	metres	x 0.3048 #
feet	yards	/ 3 #		fl.ounces	millilitres	x 29.57

x means 'multiply by' . . .
/ means 'divide by' . . .
# means it is an exact value
All other values given to an appropriate degree of accuracy.

gallons	pints	x 8 #		gallons	cubic feet	x 0.1337
gallons	litres	x 3.785		grams	kilograms	/ 1000 #
grams	ounces	/ 28.35		hectares	acres	x 2.471
hectares	square km	/ 100 #		hectares	square metres	x 10000 #
hectares	square miles	/ 259		hectares	square yards	x 11 960
inches	centimetres	x 2.54 #		inches	feet	/ 12 #
kilograms	ounces	x 35.3		kilograms	pounds	x 2.2046
kilograms	tonnes	/ 1000 #		kilograms	tons (short)	/ 907
kilometres	metres	x 1000 #		kilometres	miles	x 0.6214
litres	cu.inches	x 61.02		litres	gallons	x 0.2642
litres	pints (liquid)	x 2.113		metres	yards	/ 0.9144 #
metres	centimetres	x 100 #		miles	kilometres	x 1.609
millimetres	inches	/ 25.4 #		ounces	grams	x 28.35
pints (liquid)	litres	x 0.4732		pounds	kilograms	x 0.4536
pounds	ounces	x 16 #