What Is Volume?
Mathematics · Measurement · Grades 4–6
Meaning at a glance
Volume is the amount of space a solid shape takes up, measured in cubic units.
Also searched as: volumes, cubic units, cubic centimetres, volume of a cuboid, volume of a box.
Understand it simply
Area covers a flat surface. Volume fills a solid. To measure it, count how many unit cubes fit inside. A cube with sides of 1 centimetre has a volume of 1 cubic centimetre.
For a box shape (a cuboid), multiply: length × width × height.
See it work
A box is 4 cm long, 3 cm wide and 2 cm high. The bottom layer holds 4 × 3 = 12 cubes. There are 2 layers, so 12 × 2 = 24. The volume is 24 cubic centimetres.
Avoid this confusion
Volume is not area. Area uses square units and covers a flat surface. Volume uses cubic units and fills a space.
Volume is not the same as capacity. Capacity is how much liquid a container holds, often in litres or millilitres. Volume is the space itself.
Try it yourself
Work these out first, then check your answers below.
A box is 5 cm long, 2 cm wide and 3 cm high. What is its volume?
A cube has sides of 2 cm. What is its volume?
Does area or volume measure the space inside a box?
Check your understanding
Show the answer to question 1
Answer: 30 cubic centimetres
5 × 2 × 3 = 30.
Show the answer to question 2
Answer: 8 cubic centimetres
2 × 2 × 2 = 8.
Show the answer to question 3
Answer: Volume
Area measures a flat surface. Volume measures the space a solid takes up.
Understand more with Courseversity
You now know what volume means. Keep going with a full lesson, then explore the ideas that connect to it.
Learn
Learn this in a full lesson.
- Volume (Grade 5)
- Unit cubes (Grade 5)
- Volume of rectangular prisms (Grade 5)
Practise
Practise with Learning Lab questions for the lesson Volume (Grade 5), with an explanation after each answer.
Explore
Ideas that connect to this word.
- Area: area measures flat space, volume measures solid space.
- Multiplication: volume of a box uses multiplication.
Save
Keep this word in My Study Dashboard so you can revise it later.
Keep building your understanding. Join Courseversity free to save this concept and continue learning.
Sources and review
This explanation was written from Courseversity lesson content (see the lessons above). An outside reference check is still on the editorial to-do list.
Written by: Courseversity editorial team (AI-assisted draft).
Review status: checked against the sources above. Educator review is pending, so please tell us if anything looks wrong.
Last updated: 27 October 2026.