Business and trade mathematics
Measurement & Materials calculators
Measure area, convert feet and inches, and estimate roofing, flooring, paint, concrete and landscape materials from your dimensions. Keep measured surfaces, extra material and whole packages separate.
Area and square footage
Measure rectangles, triangles, circles and trapezoids; combine sections and subtract cutouts to find net square footage.
Open calculator →Feet and inches
Add or subtract two measurements, or multiply one length by a count, with fractional-inch entry and decimal conversions.
Open calculator →Area and volume converter
Convert square feet, square yards, acres and square meters, or cubic feet, cubic yards and cubic meters.
Open calculator →Roof area and roofing squares
Estimate roof surface area, roofing squares and shingle bundles from measured roof planes, a simple pitched footprint or known surface area.
Open calculator →Concrete slab volume and bags
Calculate concrete for rectangular slabs from dimensions or known area, depth, an allowance and the actual mix bag yield.
Open calculator →Flooring and tile boxes
Measure rooms or enter net floor area to estimate material allowance, whole boxes, surplus and optional installed cost.
Open calculator →Paint area and gallons
Measure wall or ceiling sections, subtract openings and estimate paint containers from coats and the actual product coverage.
Open calculator →Mulch soil and gravel volume
Calculate bulk cubic yards or whole bags from measured landscape area and depth, with optional material cost comparisons.
Open calculator →