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# Metric capacity conversions
- URL: https://www.esheets.io/metric-capacity-conversions/
- Published: 2025-03-08T03:49:17.000Z
- Updated: 2026-06-21T17:34:14.000Z
- Author: Richard Linnington
- Tags: Maths, Number, Geometry and Shape

Understanding how to convert metric units for capacity is essential in everyday life, from measuring ingredients in a recipe to understanding the volume of a water bottle or fuel tank. Whether you're working with milliliters, liters, or kiloliters, knowing how to switch between these units helps in science, cooking, and even shopping for liquids! [Jump to the questions](https://www.esheets.io/converting-metric-units-of-mass/)

## Jump to the questions

Worksheet preview and key skills 

### Worksheet preview

Practise metric capacity conversions with this self-marking maths worksheet.

The interactive worksheet below generates questions, gives instant feedback, and lets students record their score.

#### What you’ll practise

- Converting between ml and litres where relevant.
- Choosing the correct conversion factor.
- Multiplying or dividing by powers of 10.
- Keeping the correct capacity unit in the answer.

Use the interactive worksheet below, or read the [Topic guide](#topic-guide) for the method and worked example.

Convert the following values to the required units. 

## Topic guide

### What this worksheet practises

This worksheet focuses on converting between different metric units of capacity (volume), specifically millilitres (ml) and litres (L). This is a vital everyday skill used in cooking, science, and measuring liquids.

### Key method

The metric system is based on powers of 10\. For capacity, the magic number is **1000**.

- There are exactly 1000 millilitres (ml) in 1 Litre (L).
- **To convert Litres to millilitres (Large to small unit):** Multiply by 1000\. This means moving the decimal point three places to the right.
- **To convert millilitres to Litres (Small to large unit):** Divide by 1000\. This means moving the decimal point three places to the left.

### Worked example

**1) Convert 4.2 Litres into millilitres.** 
**2) Convert 850 millilitres into Litres.**

Step 1 (L to ml): We are going from a large unit to a small unit, so we multiply by 1000.

4.2 × 1000.

Move the decimal three places right: 4200.

Answer: 4200 ml.

Step 2 (ml to L): We are going from a small unit to a large unit, so we divide by 1000.

850 ÷ 1000.

Move the decimal three places left (starting from the end of 850.0): 0.850.

Answer: 0.85 Litres.

### Common mistakes to avoid

The most common error is multiplying when you should divide, or dividing when you should multiply. Remember: a litre is much bigger than a millilitre. If you pour a bottle of water (litres) into tiny thimbles (millilitres), you will have a huge number of thimbles. Therefore, Litres to ml always creates a much larger number.

### Things to remember

The prefix "milli" literally means "one-thousandth". Therefore, a millilitre is one-thousandth of a litre. The same prefix rule applies to length: a millimetre is one-thousandth of a metre.