# sand calculator [how much sand do i need?] - construction

Jul 06, 2019 · The sand’s density is 100 lb/ft³ and costs $10 per ton. The calculator would perform the following calculations: $$Area = Length \times Width = 5 ft \times 3 ft = 15 ft^2$$. $$Volume = Area \times Depth = 15 ft^2 \times 2\,in = 2.5 ft^3$$. $$Weight = Volume \times Density = 2.5ft^3 \times 100\,lb/ft^3 = 0.125\,t$$