Length 
Multiply
by 
Inches
to
Centimetres 
2.54 
Centimetres
to
Inches 
0.39 
Inches
to
Millimetres 
25.40 
Millimetres
to
Inches 
0.04 
Feet
to
Metres 
0.31 
Metres
to
Feet 
3.28 
Yards
to
Metres 
0.91 
Metres
to
Yards 
1.09 
Miles
to
Kilometres 
1.61 
Kilometres
to
Miles 
0.62 
Area 
Multiply
by 
Square
Inches
to
Square
Centimetres 
6.451 
Square
Centimetres
to
Square
Inches 
0.15 
Square
Feet
to
Square
Metres 
0.09 
Square
Metres
to
Square
Feet 
10.76 
Square
Yards
to
Square
Metres 
0.84 
Square
Metres
to
Square
Yards 
2.59 
Square
Kilometres
to
Square
Miles 
0.39 
Acres
to
Hectares 
0.40 
Hectares
to
Acres 
2.47 

Volume 
Multiply
by 
Cubic
Inches
to
Cubic
Centimetres 
16.39 
Cubic
Centimetres
to
Cubic
Inches 
0.06 
Cubic
Feet
to
Cubic
Metres 
0.03 
Cubic
Metres
to
Cubic
Feet 
35.32 
Cubic
Yards
to
Cubic
Metres 
0.76 
Cubic
Metres
to
Cubic
Yards 
1.31 
Cubic
Inches
to
Litres 
0.02 
Litres
to
Cubic
Inches 
61.03 
Gallons
to
Litres 
4.55 
Litres
to
Gallons 
0.22 
US
Gallons
to
Litres 
3.79 
Litres
to
US
Gallons 
0.26 
Fluid
Ounces
to
Cubic
Millilitres 
30.77 
Cubic
Millilitres
to
Fluid
Ounces 
0.03 

Weight 
Multiply
by 
Ounces
to
Grams 
28.35 
Grams
to
Ounces 
0.04 
Pounds
to
Kilograms 
0.45 
Kilograms
to
Pounds 
2.21 
Long
Tons
to
Tonnes 
1.02 
Tonnes
to
Long
Tons 
0.98 
Short
Tons
to
Tonnes 
0.91 
Tonnes
to
Short
Tons 
1.10 