Millilitres and Litres: Capacity Conversions
How much juice is in a glass? How much water fits in a bucket? This free activity helps children work with millilitres (ml) and litres (l), the units we meet every day in the kitchen, at the shop and in the science room.
Each question asks children to change one capacity unit into another, such as 2 litres into 2000 millilitres, or 750 ml into litres. Numbers start simple and grow a little harder, so learners build confidence step by step. You can solve the questions on screen or print the page for quiet practice.
How to play
- Read each question and notice which unit you start with and which unit you need.
- Remember the key fact: 1 litre = 1000 millilitres. Multiply by 1000 to go from litres to millilitres, and divide by 1000 to go the other way.
- Write or choose your answer, then check it. Does the number look sensible for a bottle, a cup or a bucket?
- Try a new set of questions, or print the page and practise again later.
In this activity your child practises converting between millilitres and litres using the rule 1 l = 1000 ml. They learn to multiply and divide by 1000 confidently, handle decimals such as 1.5 l, and judge whether an answer is reasonable for everyday containers like a water bottle, a mug or a bucket. These skills support later work on measurement, decimals and word problems in science and cooking. Try linking the practice to real life: ask your child to read capacity labels on bottles and cartons at home, or measure water with a jug while cooking together.
Frequently asked questions
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More units & measures (metric & imperial)
Updated 5 Nov 2026