Free Construction Calculators

Real math, no account required. Enter your numbers and get a real answer -- these are the same calculators used inside SchoHome's own tools, pulled out on their own for a quick check.

Concrete Calculator

Cubic yards, cubic feet, and bags of ready-mix for a slab or footing.

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Excavation & Fill Calculator

Bank volume, hauled (loose) volume, and truck loads for a dig.

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Contractor Markup Calculator

Selling price and profit from cost and markup -- with the equivalent margin shown too.

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Home Payment Calculator

Estimate a monthly principal-and-interest mortgage payment.

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Material Calculator

Paint, drywall, and flooring quantities for a room -- three calculators in one.

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Home Building Cost Calculator

A quick square-footage-only ballpark before you build a real budget in Budget Lab.

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Roofing Calculator

Roof surface area, squares, and shingle bundles from your footprint and pitch.

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Want to read instead of calculate? Check the guides. Looking for something else? Search all of SchoHome.

Before you continue
SchoHome — Terms v1.3 · Privacy v1.2

SchoHome is a software platform, not the actor. We provide tools and connections only.

You are responsible for your decisions, actions, and interactions on this platform. We do not guarantee outcomes, performance, safety, or results.

Every user-created save must be marked Private or Public. Private saves are hidden from other users, but authorized SchoHome administrators may access them to operate, support, secure, or moderate the service.

Always verify information independently and use licensed professionals where required.

By clicking I Agree, you accept our Terms of Service and Privacy Policy.

AI outputs may be inaccurate. Contractor "Verified" status is admin-reviewed, not independently certified. Always verify with licensed professionals.