We know that kilo means 1,000.

We also need to know that centi means a hundredth and milli means a thousandth.

1 centimetre is 1/100 of a metre and 1 centilitre is 1/100 of a litre.

1 millimetre is 1/1000 of a metre and 1 millilitre is 1/1000 of a litre.

So 10 mm = 1 cm

10 ml = 1 cl

1 kg = 1,000 g

Example

Convert 24.5 cl to ml and l.

10 ml = 1 cl, so we multiply 24.5 by 10 to get 245 ml.

245/1000 = 0.245 litres

Answer: 24.5 cl = 245 ml and 0.245 l

There's quite a lot of information to get your head round here, so remember that you can look back at this introduction at any point by clicking on the red help button on the screen.