Converting Grams to Kilograms: Step-by-Step Example
23 October 2026
Understanding how to convert between grams and kilograms is an important skill for the 11+ maths exam. Many questions will ask your child to change weights from one unit to another, so it helps to know the method clearly.
Worked example
Question: Convert 2500 grams to kilograms.
Step 1. Remember that 1 kilogram (kg) = 1000 grams (g).
Step 2. To change grams to kilograms, divide the number of grams by 1000.
Step 3. 2500 ÷ 1000 = 2.5
Key insight: Dividing by 1000 moves the decimal point three places to the left.
The correct answer is 2.5 kilograms.
After working through this example, your child will be able to spot when to divide by 1000 to switch from grams to kilograms. The next step is to practise similar questions, so they feel confident with weight conversions in any 11+ context.
