Tools & Calculators
Practical planning tools for real residential projects.
1 Off Construction is building a practical library of construction calculators, material estimators, references, and planning resources for common home repair and improvement work.
Use them here or install 1OFF Tools for quick access on your phone.
Trade Hubs
Start with the part of the job you are planning.
Each hub will collect calculators, quick references, and setup guidance for that category. The tools are scaffolded for now and will be implemented in focused passes.
Electric blue / cyan
Electrical
Planning aids and reference-style tools for electrical-related residential project work where appropriate.
View hubWarm amber / wood tone
Carpentry
Estimators and planning references for framing, trim, repairs, small builds, and wood-focused projects.
View hubSlate / deep blue-grey
Roofing
Preview tools for roof area, pitch, shingle estimates, underlayment planning, and waste allowances.
View hubCool steel grey
Siding & Exterior
Exterior planning cards for siding, wrap, soffit, fascia, trim, and waste-factor estimates.
View hubStone grey
Concrete & Masonry
Planning scaffolds for concrete volume, footing, bag quantity, block count, and mortar estimates.
View hubNeutral white / graphite
Drywall & Interior
Interior planning cards for sheet counts, compound, screws, insulation, and paint coverage.
View hubMuted crimson / steel
General Materials
General-purpose material planning for lumber, area, volume, fasteners, unit conversion, and waste allowance.
View hub