All calculators
Free, accurate calculators for home improvement, DIY materials, and landscaping. Search or browse by category.
Concrete & Masonry
View categoryLandscaping
View categoryMulch Calculator
Estimate cubic yards and bags of mulch, compost, or bark for garden beds.
Gravel Calculator
Find tons and cubic yards of gravel or crushed stone for driveways and paths.
Topsoil Calculator
Estimate cubic yards and bags of topsoil by area and depth.
Sand Calculator
Estimate tons and cubic yards of sand for paver bases and fill.
Stone Calculator
Estimate tons and cubic yards of crushed or decorative stone.
Pea Gravel Calculator
Estimate tons and cubic yards of pea gravel for paths and patios.
Landscape Rock Calculator
Estimate tons and cubic yards of decorative landscape rock.
Carpentry
View categoryBoard Foot Calculator
Calculate board feet of lumber from thickness, width, length, and quantity.
Deck Board Calculator
Estimate how many deck boards you need for your deck size.
Stair Calculator
Calculate the number of steps, rise, and run from total height.
Stair Stringer Calculator
Calculate stringer length and notch dimensions for a staircase.
Rafter Calculator
Calculate rafter length and count from span, pitch, and spacing.
Roofing & Siding
View categoryInterior Projects
View categorySquare Footage Calculator
Calculate the area of a room or surface in square feet, yards, and meters.
Drywall Calculator
Estimate drywall sheets for walls and ceilings.
Paint Calculator
Estimate gallons of paint by wall area, coats, and openings.
Flooring Calculator
Estimate boxes of flooring with a waste factor for any room.
Tile Calculator
Find how many tiles you need for a floor or wall.
Insulation Calculator
Estimate insulation batts or rolls by area.