Placeholder Quantity Calculators with Dandy's Topsoil & Landscape Supplies


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Here at Dandy's we often get asked to help work out quantities needed for topsoil, bark, and gravel.

Here are some quantity calculations to give you a helping hand, please note though these are just estimates and of course may not be exact - we advise you to under order so that you can always order more if you need to!


Length (m) X Width (m) = m2 

m2 X 1.2 X Depth (inches)...

then divide your total by 36 = approx tonnes required


1 tonne = 1000kgs / 1 Jumbo Bag

Garden Lawn Turf

Length (m) X Width (m) = amount of m2 rolls needed. 

We advise that you order 10% extra so that you have plenty for offcuts.

Gravel & Slate

Length (m) X Width (m) = m2 

m2 x 0.04 = tonnes per 1 inch/25mm depth


Use the gravel calculation then multiply by 1.25 (= tonnes per inch)

Bark, Mulch and Compost

Length (m) X Width (m) = m2 

m2 x 0.05 = cubic metres per 2 inch / 50mm depth


1 cubic metre = 1000ltrs / 1 Jumbo Bag

Natural Stone Paving

Length (m) X Width (m) = m2 required

Our project packs are 15.25m2

Still need help? Get in touch!