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tool.paint-coverage Calculator
Calculates litres or gallons of paint needed for a room from wall area, door/window deductions, and the product's coverage rate per litre. Most homeowners underestimate by 20% — two thin coats always beat one thick one.
Inputs
Width Ft
Horizontal extent perpendicular to the length.
Length Ft
Linear measurement. Ensure consistent units: 1 m = 1,000 mm = 3.281 ft.
Height Ft
Vertical measurement. For health calculators, typically standing height without shoes.
Doors
Count of items or occurrences.
Coverage
Age in completed years. Many health and fitness formulas adjust for age.