Patio Calculator
Calculate the paving slabs, sub-base and bedding sand for a new patio.
Your result
Paving slabs
48 slabs
Sub-base (MOT Type 1 / crushed stone)
3.57 tonnes · 3.93 US tons
Bedding sand (40 mm)
1.07 tonnes · 1.18 US tons
Patio area
180 ft² · 16.7 m²
Layers of a patio
A durable patio has three layers: a compacted sub-base of crushed stone (MOT Type 1 in the UK, typically 100 mm / 4 in), a bedding layer of sharp sand or mortar (around 40 mm), and the paving slabs themselves.
Sub-base weight is estimated at 2.1 tonnes per m³ compacted; sand at 1.6 tonnes per m³.
Frequently asked questions
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