Don't use this, use our brand new calculator for all garden aggregates

How do I calculate how much gravel I need?

To calculate the weight needed to cover your specific area, such as pathways or driveways with our gravel or pebbles, you will need to know the lengthwidth and depth of your space. By calculating the size of your outdoor space, our calculator will let you find an estimate which will help you while completing the order.

Calculator – How much do I need?

Area Volume Weight 20KG Bags
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Please notes the purpose of the calculator is to provide a rough estimate. 

Simplest Gravel Calculator In The UK

For example, if you want to cover 1m2 (1 meter x 1 meter) of your area of depth 50mm, you will need approximately 100kg of pebbles or gravel. On the other side, the depth of 30mm will need 60 kilograms. However, we do recommend a depth of at least 50mm for better results.
Fraction 10/30mm 30/60mm 60/100mm
1m2 3 Bags (50-60kg) 4 Bags (60-80kg) 5 Bags (80-100kg)

How much does a 20kg bag of gravel cover?

As heavy as it may sound, 20 kilograms or 50 pounds is not a lot when we look at the area we want to decorate in meters squared. Therefore, it is essential to understand the weight factor. For example, 20 kilograms of pebbles may cover only 0.5m2, and please do remember it does vary on the depth of the gravel or aggregate used. Do not feel discouraged. The final results are excellent!

Can I Use Gravel Calculator For All Decorative Aggregates Like Pebbles And Cobbles?

Yes, we've created a calculator with all our products in mind. You only need to select the depth depending on the decorative aggregate.

Do you need help?

If you are ordering a large amount of pebbles or gravel
please do not hesitate to email us at and we can discuss it further.