We often get asked how much gravel is needed for a landscaping project. It’s a great question, and one we hope to solve with a brand-new aggregate calculator. Whether you are looking to lay decorative aggregates on your driveway, create a garden path or add some gravel to your landscaping, we can help you determine how much you will need.

See our popular FAQs below:

What measurements do I need to calculate the amount of gravel I need?

You can calculate gravel coverage by finding out the length, width and depth of the coverage area. Use the Kelkay gravel calculator to easily work out how much material you need.

To use the Kelkay aggregate calculator, input the length and width of the area you want to cover. We’ve already input the depth – recommended at 30-50mm coverage for all our decorative aggregates. If you want to change the depth to suit your space, change it in the calculator before submission.

How do I measure up the surface area of my garden or driveway?

Using a tape measure, measure around the edge of your garden. Start by measuring the longest length and width of the space. If you have any irregular or curved areas, measure each separately. Add your measurements to the calculator, and it will work out square metreage and how much material you need to cover the space.

How deep should gravel be?

For decorative aggregates, chippings, slates, and pebbles, we recommend a depth of 35mm. The depth is already set in the calculator, but you can change it to suit individual projects.

Does this gravel calculator work with every type of aggregate?

Yes, it can. While the calculator tool is an approximate guide, it will give you a reliable estimate of the volume of material to order.

Can you use the calculator for all aggregates?

Our calculator can be used for most gravel and aggregates featured on our website including gravel, chippings, slate, pebbles, cobbles and rockery. Work out how much aggregate you need here.

It is important to note that every project is unique, so this calculator should only be used as a rough guide. If you need assistance with a specific project or if you have any questions, please do not hesitate to contact us – we’re always happy to help!

More FAQs can be found along with the calculator.