Free tool
Owner-Builder Calculators
Takeoff sheets for the materials that dominate your budget — quantities first, cost ranges second, every formula shown.
Sheets12 tools
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FormulasShown
OutputPrint-ready
Takeoff sheets
One sheet per trade
TO-01 — TO-07
TO-01Framing Lumber CalculatorStuds, plates, headers, and sheathing for every wall in the house.studs · plates · sheathingTO-02Drywall CalculatorSheets, mud, tape, and screws — by room or for the whole house.sheets · mud · tapeTO-03Concrete Slab CalculatorCubic yards, bag counts, rebar or mesh — sized so the truck isn’t short.yards · bags · rebarTO-04Roofing CalculatorSquares, bundles, underlayment, and cap from footprint and pitch.squares · bundles · underlayTO-05Paint CalculatorGallons of paint and primer by room or whole house, coats included.gallons · primer · trimTO-06Flooring CalculatorSquare footage with honest waste factors, box counts, underlayment.sq ft · boxes · underlayTO-07Insulation CalculatorBatt bags for walls, blown-in bags for the attic, by R-value.batt bags · blown-in bags
Planning worksheets
The whole-build numbers
W-01 — W-04
W-01Cost Savings CalculatorGut-check whether owner-building pencils out: the GC fee you avoid, honestly separated from the value of your own hours.savings · GC feeW-02Whole-House Material EstimatorPlanning-level quantities for the entire build — concrete through insulation — from square footage and finish level.all majors · total costW-03Timeline EstimatorA realistic build schedule from your hours per week, DIY share, and experience — phase by phase.months · phasesW-04Budget TrackerBudget vs. actual by phase, with contingency burn — so overruns surface early instead of at the end.variance · contingency
Drawing sheets
Draw it, don't just count it
SP-01
From your plans
When you have a plan set
PT-01