Practical Calculators forWoodworking, DIY & Construction
Calculate concrete, gravel, roofing, fence posts, deck materials, deck costs, deck stain, lumber, plywood, board feet, stair layouts and project quantities with simple tools built for real-world projects.
Featured Tool
Roof Pitch Calculator
Convert rise and run into roof pitch, angle and slope. Estimate roof area, roofing squares and approximate rafter length.
Project Math Tools
Useful calculators for real projects
Free construction, roofing, landscaping, deck, woodworking and DIY calculators for material quantities, measurements, costs and project planning.
Construction & Landscaping
Estimate concrete, masonry, gravel, roofing and fence-post requirements.
Roof Pitch Calculator
Calculate roof pitch, angle, slope percentage, roof area, roofing squares and rafter length.
Concrete Calculator
Calculate cubic yards, concrete bags, waste allowance and estimated concrete cost.
Concrete Block Calculator
Estimate CMU blocks, wall area, openings, waste allowance and block cost.
Gravel Calculator
Estimate gravel cubic yards, tons, bags, waste allowance and material cost.
Pea Gravel Calculator
Estimate pea gravel yards, tons, bags and cost for paths, patios and landscaping.
Fence Post Depth Calculator
Estimate post hole depth, total post length, hole diameter, concrete bags and cost.
Deck & Outdoor
Plan decking quantities, project cost, stain coverage and deck stair layouts.
Deck Material Calculator
Estimate deck boards, linear feet, waste allowance and decking material cost.
Deck Cost Calculator
Estimate decking, framing, railing, stairs, labor and total deck building cost.
Deck Stain Calculator
Estimate deck stain gallons, liters, coverage, containers and project cost.
Pool Maintenance Cost Calculator
Compare monthly and annual DIY vs. professional pool care costs using your electricity, water and service prices.
Stair Stringer Calculator
Calculate risers, treads, total run, stair angle and approximate stringer length.
Woodworking & Lumber
Calculate lumber volume, board quantities, plywood sheets and efficient cut plans.
Board Foot Calculator
Calculate board feet, lumber quantity and optional material cost.
Lumber Calculator
Estimate board quantity, linear feet, board feet, waste allowance and material cost.
Plywood Calculator
Estimate plywood sheet quantity, waste allowance and material cost.
Cut List Optimizer
Plan efficient lumber cuts, reduce material waste and improve project takeoffs.
Calculate first. Build with confidence.
Project Math Tools makes common construction, roofing, landscaping, decking, woodworking and DIY calculations easier. Each calculator focuses on one practical task and gives clear results without unnecessary complexity.
Estimate roof pitch, concrete, blocks, gravel, fence post depth, deck materials, deck building cost, deck stain, lumber, plywood sheets, board feet and stair dimensions.