All calculators

Every free calculator on calcs.homes, in one place. More categories ship every week.

Measuring & volume

Square Footage Calculator

Find the square footage of any room or lot — rectangle, circle, or triangle.

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Cubic Yard Calculator

Convert any length, width, and depth into cubic yards of material.

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Volume Calculator

Interior volume of a box or cylinder, shown in cu ft, cu yd, and gallons.

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Cubic Feet Calculator

Cubic feet from your dimensions, plus a quick cu ft ⇄ sq ft mode.

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Circle Calculator

Solve for a circle's diameter, radius, circumference, or area.

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Concrete & masonry

Concrete CalculatorPopular

Bags, cubic yards, and cost for a slab, footing, or column.

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Gravel Calculator

Tons of gravel or crushed stone needed for a driveway or path.

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Pool & spa

Pool Gallon Calculator

Quick gallons for a rectangle, round, oval, or kidney pool.

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Pool Volume Calculator

Full volume with a sloped deep end, or an above-ground preset.

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