Home & Construction Calculators

Risers, treads, actual riser height, total run and stringer length from the total rise — with a code check on riser and tread size.

Boxes of flooring to buy and what they cost — room size plus waste, rounded up to whole boxes at your price per square foot.

Posts, rails, pickets and concrete bags for a wood fence — add each run of fence, set post spacing and gates, and get the material cost.

Board feet and lumber cost for two sizes of stock — thickness, width, length and piece count to total board feet at your price per board foot.

How much paint to buy for a room — from wall dimensions, doors, windows and number of coats.

Cooling and heating BTU/h for a room and the AC size in tons — from floor area, ceiling height, climate, sun exposure and occupants.

Concrete for a slab — cubic feet, cubic yards with a waste allowance, and 60 lb bag count from length, width and thickness.

Shingle bundles for a gable roof — footprint and pitch to sloped area, squares, and bundles with waste.

Sheets of drywall for a room — walls (and optional ceiling) to total area and 4×8 sheets with waste.

How much mulch or gravel a bed needs — length, width and depth to cubic feet, cubic yards, and 2-cu-ft bags.

Inches of attic insulation to add, packages to buy and the cost — from your area, current R-value, climate zone and insulation type.

Multi-room paint estimator with brand/quality paint lookup table, labor cost estimate, and profit margin analysis

Estimate fountain water loss from evaporation physics (surface area, water temp, wind, humidity) and how often to top off the reservoir. Built by Steve Strong.