Calculators
These calculators turn your measurements into the units suppliers sell, with the source for every number. Pick the material you're ordering to start.
Gravel and rock
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Gravel Calculator Gravel calculator for any shape: cubic yards, tons and bags of #57, pea gravel, river rock or crusher run, with a depth guide and sourced gravel weights.
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Rock Calculator Rock calculator for beds, borders and tree rings: cubic yards, tons and bags of river rock, lava rock or #57 stone, plus how far one ton of each rock goes.
Concrete
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Concrete Calculator Concrete calculator for slabs, footings, Sonotubes, steps and post holes
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Concrete Block Calculator Concrete block calculator for 8 × 8 × 16 in block walls: blocks after doors and windows, 5% extra, mortar bags and grout or concrete to fill the cores.
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Fence Post Concrete Calculator Fence post concrete calculator: bags of fast-setting or 80 lb mix for 4×4, 6×6 and round posts, with hole sizes, a gravel base and Sonotube footings.
