Change between g and kg | Year 5 Maths Resources

What you need to know

Things to remember:

  • There are 1000g in 1kg

We need to remember that:

There are 1000 grams in 1 kilogram

Writing these out can be time consuming and take up more space, so we usually write them in a shorthand.

Kilograms — kg

Grams — g

– What is 3kg in grams?

We know that 1kg is the same as 1000g, and that 3kg is just 3 lots of 3kg, so we need 3 lots of 1000.



3kg = 3000g

So really, we just need to multiply the kilograms by 1000 to turn kilograms into grams.

We can draw a little diagram to help us remember.

Looking at this, how do you think we might turn grams into kilograms? What is the opposite of multiplication? Division! So, we can go backwards by dividing by 1000.

What is 7500g in kg?

To go from grams to kilograms we divide by 1000.


7500g = 7.5kg

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Example Questions



6.7kg = 6700g



5800g = 5.8kg

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