How to Do Conversions

In the next screens, you are asked to convert between units of mass.

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 65 nanograms to micrograms.

1 µg = 10-6 m
1 ng = 10-9 m

1 nanogram is 10-6 times ie 103 times smaller than a microgram.
10-9
Thus: 65 ng = 65 / 103µg =0.065µg
Click to Continue
Example
Convert 7.5 milligrams to micrograms.

1 mg = 10-3 g
1 µg = 10-6 g

1 milligram is 10-3 times ie 103 times larger than 1 microgram
10-3
Thus: 7.5 mg = 7.5 x 103µg = 7500µg
Click to Continue