How to Do Conversions

In the next screens, you are asked to convert between SI Units of volume.

To convert from a larger unit to a smaller unit

  1. Find by how many times the larger unit is bigger than the smaller unit
  2. Multiply the larger unit by this number

To convert from a smaller unit to a larger unit

  1. Find by how many times the smaller unit is less than the larger unit
  2. Divide the smaller unit by this number
Example
Convert 3.75 centimetre cubed to millimetre cubed.

1 cm3 = 10-6 m3
1 mm3 = 10-9 m3

1 cm3 is 10-6 times ie 103 times larger than 1 mm3
10-9
Thus: 3.75 cm3 =3.75 x 1000 mm3 = 3750 mm3
Click to Continue
Example
Convert 4750 millimetres cubed to decimetres cubed.

1 mm3 = 10-9 m3
1 dm3 = 10-3 m3

1 mm3 is 10-3 times ie 106 times smaller than a dm3
10-9
Thus: 4750 mm3 = 4750 / 1000000 dm3 = 0.00475 dm3
Click to Continue