Construction Calc: Toolbox

Go beyond material estimates with specialized tools for roofing, finish carpentry, HVAC, and electrical work - all in one focused toolbox.

Construction Calc: Toolbox brings eight focused jobsite calculators into one app for contractors, builders, tradespeople, estimators, and serious DIY projects.

Estimate materials, plan layouts, check cuts, size systems, and save job details without switching between separate apps. Work in Imperial or Metric units, including tape-style feet, inches, and fractions where supported. Core calculations work offline.

EIGHT TOOLS, ONE TOOLBOX

PAINT ESTIMATOR • Estimate paint and primer for walls and ceilings, accounting for openings, coats, and reserve • Get can suggestions, save rooms, and request painting guidance

TILE & PLANK • Estimate tile or plank for multiple surfaces, including cutouts, waste, boxes, grout, and cost • Compare layout patterns and detailed cuts, then save, search, or duplicate projects

BRICK CALCULATOR • Estimate bricks, mortar, packs, and cost using regional presets or custom sizes • Account for wall types, openings, waste, and cement, lime, and sand quantities

ROOFING CALCULATOR • Create multi-plane takeoffs for shingles, underlayment, accessories, pitch, and waste • Measure roof pitch and calculate material, labor, markup, tax, and total cost

FENCE CALCULATOR • Plan wood, vinyl-panel, or chain-link fences with multiple runs and gates • Estimate materials, concrete, hardware, and cost with layout warnings

CROWN CUT GUIDE • Calculate miter and bevel settings for inside or outside corners and flat or nested cuts • Handle different saw types, custom spring angles, vaulted transitions, and stock estimates

DUCT SIZE CALCULATOR • Size and analyze round or rectangular duct by airflow, velocity, or friction • Compare equivalent sizes and estimate pressure loss in Imperial or SI units

VOLTAGE DROP • Check NEC/AWG and BS-style Metric runs across common DC and AC systems • Compare conductors, voltage drop, power loss, ampacity, and suitable wire sizes

START FREE. UPGRADE ONCE. Use the core features of every calculator for free. A one-time Lifetime upgrade unlocks all Pro tools. No monthly or yearly subscription.

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