How to Paint a Room
From preparing walls to applying the final coat.
Read guideFree calculators + practical guides
Plan your home project before you buy.
Use free home project calculators to estimate the materials you need, then follow step-by-step guides to measure and prepare with confidence. Project cost estimates and quote review are in development.
Free material calculatorsNo account requiredProject guides
Available now
Start with the quantity you need to know.
Choose a project and use your own measurements. Every calculator shows the assumptions behind its estimate.
Paint Calculator
Work out gallons for walls, ceilings, primer, and coats.
Open calculatorFlooring Calculator
Measure floor area, waste, boxes, and material cost.
Open calculatorTile Calculator
Plan tile quantity, cuts, overage, and boxes.
Open calculatorConcrete Calculator
Estimate cubic yards, ready-mix, or bags.
Open calculatorCurtain Calculator
Choose rod width, panel count, and finished length.
Open calculatorRaised Bed Soil Calculator
Find cubic feet, cubic yards, or whole soil bags.
Open calculatorProject guides
Good measurements make better plans.
Follow the steps for your project, then use the related calculator when you are ready for the numbers.
How to Measure for Curtains
Measure the rod, choose fullness, and order the right panels.
Read guideHow to Build a Raised Garden Bed
Plan bed dimensions, frame, fill depth, and soil.
Read guideComing next
More help for the cost decisions ahead.
The tools above are available today. These two features are still in development; join a waitlist if you want a launch update.
Cost Estimators
We’re building project-level planning ranges that bring materials, labor, preparation, and extra costs together.
Explore the plan and join the waitlistQuote Checker
We’re building a way to review unclear scope, missing details, and questions to ask before you sign a contractor quote.
Explore the plan and join the waitlistCommon questions
Know what to expect.
What can I use on HomeCostAI today?
Use the free calculators to estimate material quantities and read the project guides to plan measurements and next steps. Project cost estimators and Quote Checker are in development.
Do I need an account to use a calculator?
No. The available material calculators can be used without creating an account.
How accurate are the calculator results?
Results use your measurements and the coverage, package size, and allowances you enter. Confirm quantities against the product label and conditions at your site before buying.
Can HomeCostAI estimate labor or review a contractor quote?
Not yet. Cost Estimators and Quote Checker have separate waitlists for launch updates. The available calculators focus on material planning.
Start with what you know
Turn your measurements into a better buying plan.
Pick a calculator for the materials you need, or read a guide to learn what to measure first.