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Construction & material calculators
How much gravel, concrete or mulch do you need? Project Yards (projectyards.com) turns your measurements into the quantity to order and what it will cost.
Example answer
Gravel pad, 20 × 10 ft, 4 in deep
- Order
- 3.8 tons
- Volume
- 2.72 yd³
- Cost at $50/t
- $190
That is 37 wheelbarrow trips, or one small dump-truck delivery.
Try the gravel calculatorMost used
All 391 calculators- Square Footage CalculatorArea of any room, yard or shape
- Gravel CalculatorTons and yards for drives and paths
- Cubic Yard CalculatorVolume for soil, stone or concrete
- Mulch CalculatorYards or bags for garden beds
- Voltage Drop CalculatorWill a long wire run lose too much?
- Stair CalculatorRisers, treads and stringer length
- Roof Pitch CalculatorPitch, angle and roof area
- Fence CalculatorPosts, rails and pickets
- Deck CalculatorBoards, joists and screws
- Rafter CalculatorRafter length from pitch and run
- Asphalt CalculatorTons of asphalt for paving
- Topsoil CalculatorBags or yards for lawns and beds
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Formulas you can check. Every page shows its formula and a worked example, and the densities and coverage rates are listed on the Methodology page.
Estimates, so verify. Material weights vary by supplier and moisture. Confirm the final quantity with your supplier before you buy.