Calculateus

Paver Base Material Calculator

Calculate the gravel and sand base material needed under a paver patio or walkway.

Result

Gravel Base Needed
2.47 yd³ (1.89 m³)
Bedding Sand Needed
0.62 yd³ (0.47 m³)

A 4" compacted gravel base is standard for pedestrian patios and walkways - bump it up to 6-8" for driveways or areas that will see vehicle traffic.

About the Paver Base

A paver patio's durability depends more on what's underneath it than on the pavers themselves, and estimating the gravel base and bedding sand separately keeps both layers from being underbought.

How It Works

The calculator multiplies the patio area by the gravel base depth to find gravel volume, and separately multiplies the same area by the bedding sand depth to find sand volume, converting both to cubic yards.

volume = area × depth (in feet), calculated separately for gravel base and bedding sand

Examples

A standard patio

A 200 sq ft patio with a 4 inch gravel base and 1 inch of bedding sand needs about 2.47 cubic yards of gravel and 0.62 cubic yards of sand.

A driveway-rated base

The same 200 sq ft area with a 6 inch gravel base instead needs about 3.7 cubic yards of gravel, notably more than the pedestrian-rated depth.

Advantages

  • Calculates gravel and sand volumes separately, matching how they're purchased
  • Shows results in both cubic yards and cubic meters
  • Uses depth defaults appropriate for pedestrian-rated patios

Common Mistakes

  • Using a pedestrian-rated gravel depth under an area that will see vehicle traffic
  • Not compacting the gravel base in layers before laying pavers
  • Skipping the bedding sand layer or making it too thick, which causes pavers to settle unevenly

Edge Cases to Watch For

  • A 4 inch compacted gravel base is standard for pedestrian patios and walkways, but driveways or any area seeing vehicle traffic typically need 6-8 inches instead.
  • Gravel needs to be compacted in lifts (layers), not dumped and compacted all at once, especially for anything deeper than a few inches, which affects labor but not the material volume itself.
  • Skipping the gravel base or under-compacting it is one of the most common reasons paver patios become uneven or sink over time.

Common Use Cases

  • Estimating base material for a paver patio or walkway installation
  • Budgeting a paver driveway project with a deeper base requirement
  • Planning material delivery for a DIY hardscaping project
Written & fact-checked by the Calculateus TeamLast updated August 5, 2026How we verify our formulas

Frequently asked questions

Why is a gravel base necessary under pavers?

It provides drainage and a stable, compactable foundation that resists shifting and settling - skipping the base (or not compacting it properly) is one of the most common reasons paver patios become uneven or sink over time.

Related calculators

Concrete CalculatorCalculate how much concrete you need for a slab in cubic yards and 80lb bags.Paint CalculatorCalculate how many gallons of paint you need for a room.Mulch & Soil CalculatorCalculate how many cubic yards of mulch or soil you need for a garden bed.Tile CalculatorCalculate how many tiles you need to cover a floor or wall, including waste.

Conclusion

Gravel base and bedding sand are simple volume calculations, but getting the depth right for the intended use, pedestrian versus vehicle traffic, matters more than the math itself. A properly compacted base is what keeps a paver patio flat for years instead of settling within one season.