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Area, Angle & Density Converters
Convert square feet, acres, hectares, degrees, radians, density and other area and angle units. 24 free tools that run in your browser, no sign-up needed.
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Square Feet to Square MetersConvert ft² to m² and back, with a room area helper.Acres to Square FeetConvert acres to square feet (ac to sq ft) instantly, with formula and chart.Square Feet to AcresConvert square feet to acres (sq ft to ac) instantly, with formula and chart.Acres to HectaresConvert acres to hectares (ac to ha) instantly, with formula and chart.Hectares to AcresConvert hectares to acres (ha to ac) instantly, with formula and chart.Square Meters to Square FeetConvert square meters to square feet (m² to sq ft) instantly, with formula and chart.Square KM to Square MilesConvert square kilometers to square miles (km² to sq mi) instantly, with formula and chart.Square Yards to Square FeetConvert square yards to square feet (sq yd to sq ft) instantly, with formula and chart.Degrees to RadiansConvert degrees to radians (° to rad) instantly, with formula and chart.Radians to DegreesConvert radians to degrees (rad to °) instantly, with formula and chart.Square Feet to Square YardsConvert square feet to square yards (sq ft to sq yd) instantly, with formula and chart.Square Inches to Square CMConvert square inches to square centimeters (sq in to cm²) instantly, with formula and chart.Square Miles to AcresConvert square miles to acres (sq mi to ac) instantly, with formula and chart.Square Meters to AcresConvert square meters to acres (m² to ac) instantly, with formula and chart.Acre-Feet to GallonsConvert acre-feet to US gallons (ac·ft to gal) instantly, with formula and chart.Acres to Square MetersConvert acres to square meters (ac to m²) instantly, with formula and chart.Square Yards to Square MetersConvert square yards to square meters (sq yd to m²) instantly, with formula and chart.Angle ConverterConvert degrees, radians, gradians, arcminutes, mils, turns and DMS, with a unit circle.Area ConverterConvert mm², cm², m², hectares, km², sq in, sq ft, sq yd, acres and sq miles, with a size comparison.Density ConverterConvert kg/m³, g/cm³, lb/ft³, lb/in³, lb/gal and specific gravity, with a material list.Slope ConverterConvert slope between degrees, percent grade, 1:n ratio, roof pitch and radians.Water Hardness ConverterConvert water hardness between gpg, ppm, °dH, °fH and mmol/L and see how hard it is.Concentration ConverterConvert %, w/v, ppm, ppb, mg/L, g/L, mol/L, mM and µM using molecular weight and density.PPM to PercentConvert ppm to percent, ppb, ppt and mg/L, or percent back to ppm, with steps.
About Area, Angle & Density Converters
Convert areas like square feet, square meters, acres and hectares, plus angle and density units. They are commonly used for real estate listings, land plots, flooring estimates and school geometry.
Most used here: Square Feet to Square Meters, Acres to Square Feet and Square Feet to Acres.