Soil Calculator
This soil calculator covers beds, borders and containers — and treats a tapered pot as the cone it actually is, rather than a cylinder
Saqib Javaid
Roof Pitch Calculator
Free roof pitch calculator. Convert between x:12, degrees and percent grade, with the pitch multiplier, rafter length and IRC shingle slope limits
Board Foot Calculator
Free board foot calculator that works back from finished part sizes through surfacing loss and grade waste to the rough footage you actually order
Brick Calculator
Free brick calculator using BIA modular coursing. Bricks, mortar, wall ties and weep holes including the header bricks decorative bonds actually need.
Stair Calculator
Free stair calculator to IRC R311.7. Risers, treads and stringer length to the nearest 1/16 in including the bottom cut most stairs fail inspection on.
Deck Calculator
Free deck calculator for boards, joists, beams and fasteners. Compares every board length on real off-cut waste and checks joist span by timber species
Driveway Cost Calculator
Free driveway cost calculator for gravel, asphalt, concrete and pavers. Line-item pricing plus cost per year of service which ranks them the opposite way.
Insulation Calculator
Free insulation calculator by IECC climate zone. Checks whether your target R-value physically fits the cavity, and what the wall performs at after thermal bridging
Footing Calculator
Free footing calculator using IRC Table R403.1(1), with the projection rule enforced the constraint that makes many published footing dimensions illegal.
Baseboard Calculator
Free baseboard calculator with wall-by-wall cut planning. Compares every stock length on waste and mid-wall joints, instead of guessing at a waste percentage.