Calculator cluster

Construction Calculators

Plan gravel, concrete slabs and paver layers with volume, order-unit rounding, material allowances and metric or imperial measurements.

3 calculators in this cluster

Start with measured project geometry, then choose the actual material and finished layer depth. These calculators separate net dimensions from purchase allowances so a supplier quote can be checked against an explicit quantity.

The construction tools estimate materials rather than designing a structure. Product yields, bulk densities, compaction and site conditions remain editable and should be checked with the supplier or project specification.

A practical calculation workflow

Step 1

Measure aggregate

Calculate gravel coverage and compare loose volume with supplier weight.

Open Gravel

Step 2

Compare a concrete surface

Estimate slab volume and whole bags using the actual product yield.

Open Concrete Slab

Step 3

Build a paving layer stack

Keep paver pieces, gravel base and bedding sand in one material list.

Open Pavers

All Construction calculators

Choose the variable you know and the quantity you need to solve. Each tool shows its formula, default worked example, and nearby calculations.

Gravel Calculator

Estimate gravel volume, tonnes, US tons, bags and loads with editable density, waste and compaction. Calculate coverage from a known quantity.

Concrete Slab Calculator

Calculate rectangular or circular slab concrete in m³, yd³ and ft³, whole bags, cost and reverse coverage using an editable product yield.

Paver Calculator

Estimate paver pieces with joints and waste, gravel base, bedding sand and edging length. Plan the complete layer stack in metric or imperial units.

Practical notes