Plan Your Project. Buy the Right Amount. Every Time.
CalcReno gives U.S. homeowners free, easy-to-use calculators for paint, tile, flooring, concrete, wallpaper, and full room renovation costs — all in feet, inches, gallons, and dollars.
- Imperial units (ft, in, gallons)
- Costs in USD
- Built-in waste allowances
Project calculators
Know exactly how much to buy before you head to the store — paint, tile, concrete, wallpaper, and full renovation costs.
Calculator
Paint Calculator
Enter your room dimensions in feet, subtract doors and windows, and get an instant estimate of how many gallons of paint you need — plus a rough cost.
Calculator
Tile & Flooring Calculator
Estimate how many boxes of tile, laminate, or vinyl plank flooring you need for a room — with a built-in waste allowance so you do not run short mid-job.
Calculator
Concrete Calculator
Estimate the cubic yards of concrete for a slab and how many 40, 60, or 80 lb bags it takes — perfect for patios, walkways, shed pads, and footings.
Calculator
Wallpaper Calculator
Estimate how many rolls of wallpaper you need for a wall or whole room, with an allowance for pattern repeat and trimming waste.
Calculator
Renovation Cost Estimator
Get a ballpark cost range for remodeling a kitchen, bathroom, bedroom, living room, or basement based on room size and the quality level you're targeting.
Latest guides
Cost breakdowns and how-tos that pair with every calculator.
Cost Guide
Cost to Paint a Room (2026)
A clear breakdown of what painting a room really costs in 2026 — DIY materials vs. hiring a painter, the factors that move the price, and how to budget.
Cost Guide
Tile Installation Cost Guide (2026)
A practical breakdown of what tiling a floor or wall costs in 2026 — materials, labor, the factors that raise the price, and the extras people forget.
Cost Guide
Kitchen Renovation Budget Breakdown (2026)
Where the money actually goes in a kitchen remodel — cabinets, countertops, appliances, labor — and how to build a budget that survives contact with reality.
Cost Guide
Concrete Cost Guide: Slabs, Patios & Driveways (2026)
How concrete projects are priced in 2026 — bags vs. ready-mix, what raises the cost, DIY vs. hiring out, and the base and finishing work that budgets often miss.
How-To
How Much Paint Do I Need?
A clear, practical guide to estimating interior paint: the coverage rule that matters, a formula you can do in your head, and worked examples for every room.
How-To
How Many Tiles Do I Need?
A practical guide to tile math: measuring area, converting to boxes, choosing the right waste percentage for your layout, and avoiding a mid-job shortfall.
Imperial-first, U.S.-focused
Every tool works in feet, inches, gallons, and pounds — the way American homeowners actually shop. Costs are in dollars.
Estimates you can trust
We show the math behind every result and use conservative defaults, so you understand the number and don't run short mid-job.
Waste built in
Tile, flooring, wallpaper, and concrete tools include sensible waste allowances so your shopping list reflects the real world.
Start with the right number
Pick a calculator, enter your room, and get an instant, shoppable estimate — free.
Open the calculators