# Measurement: Capacity/Volume

## The SI unit for measuring Volume is the cubic metre, m³. The Capacity is how much liquid can be contained within the volume of an object and is measured in litres, l.

At Key Stage 2, we normally think of capacity in terms of how much liquid an object can contain and we talk about its capacity in litres. However it is important to understand that volume and capacity are linked and both are often used to describe capacity.

## A 1 metre cube, 1 m³, will hold 1000 litres ... 1000 litres = 1 m³

### For smaller amounts of liquid we use the millilitre, ml. 1000 ml = 1 litre

A teaspoon is approx 5 ml, a dessert spoon is 10 ml and a tablespoon is 15 ml

A bottle of mineral water could be 330 ml or 500 ml

A carton of juice is 1 litre

### A gallon is approximately 4.5 litres.

The kitchen is a good place to measure different capacities - use a measuring jug to check the capacity of different items - cups, glasses, bottles etc.

They normally have both metric and imperial measurements, so are really useful for comparing the two types of unit.

Practice working with Capacity with these
worksheets from Primary Resources