Free calculators contractors actually use.
Accurate material calculators for construction, landscaping, plumbing, electrical, HVAC, roofing, and home improvement. Fast, mobile-friendly, built for the job site.
Browse by Category
Construction
Concrete, framing, foundation, and structural calculators for builders and contractors.
Electrical
Wire gauge, load, circuit breaker, and voltage drop calculators for electricians.
Exterior
Exterior home improvement calculators for siding, roofing, windows, gutters, painting, and exterior repairs.
Exterior & Energy
Solar panels, roofing, siding, gutters, and exterior energy calculators
Exterior Maintenance
Exterior home maintenance cost calculators for painting, pressure washing, siding, gutters, driveways, and curb appeal projects.
HVAC
BTU, duct sizing, airflow, and heat load calculators for HVAC technicians.
Home Improvement
Paint, flooring, drywall, tile, and general home improvement calculators.
Interior Renovation
Interior renovation cost calculators for flooring, painting, drywall, bathroom, kitchen, and home improvement projects.
Landscaping
Mulch, gravel, soil, and ground cover calculators for landscaping professionals and homeowners.
Outdoor Living
Outdoor living and exterior project calculators for decks, fences, concrete, siding, and landscaping.
Plumbing
Pipe sizing, water flow, and fixture calculators for plumbers and DIY homeowners.
Roofing
Shingle, underlayment, ridge cap, and roofing material calculators for roofers.
Smart Home & Security
Smart home, security system, and automation cost calculators for homeowners and contractors.
Yard Services
Yard and outdoor service cost calculators for tree removal, lawn care, landscaping, irrigation, and outdoor maintenance.
Why NicheCalc?
Every calculator on NicheCalc is purpose-built for a specific trade. No generic math tools. Real formulas, real material costs, real results you can take to the supply store.