Patio Base Calculator: Aggregate and Sand Estimate
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Patio Base Material Calculator

Calculate the required volume of gravel/crushed stone and bedding sand for your paving project in cubic yards or meters.

m
cm

Accurate Material Estimation for Paving Projects

Building a durable patio, walkway, or driveway requires precise material calculation for the sub-base (gravel) and the laying course (sand). Over-ordering leads to unnecessary cost and waste, while under-ordering causes project delays.

Core Volume Calculation Principle:

All calculations rely on the simple volume formula: $\text{Volume} = \text{Length} \times \text{Width} \times \text{Depth}$. The key step is ensuring all input units (length, width, and depth) are converted to a single base unit (meters or feet) before multiplication.

Unit Conversion Table:

This tool handles conversion automatically. Key conversion factors used:

  • $1 \text{ foot (ft)} \approx 0.3048 \text{ meters (m)}$
  • $1 \text{ inch (in)} = 0.0254 \text{ meters (m)}$
  • $1 \text{ cubic meter (m}^3) \approx 1.308 \text{ cubic yards (yd}^3)$
Always calculate an extra 5-10% for waste and compaction!