How much material do you actually need?
Free calculators for paint, tile, lighting, and more — so you buy right the first time.
8 free tools · No signup required
1 calculator · 8 guides
Lighting
Layout & spacing tools
3 calculators · 6 guides
Walls & Paint
Paint, wallpaper, curtains
4 calculators · 5 guides
Flooring & Tile
Tile, flooring, concrete
Calculators
Lighting
See how it looks
See how it looks
in your ceiling
Most Popular
Recessed Lighting Layout Calculator
Get the exact spacing, placement, and number of lights for any room. Works for flat and vaulted ceilings.
Calculate your layout →
Latest guides
Lighting
How many recessed lights do you actually need?
The formula that pros use — plus our free calculator.
Read guide →
Walls
Wall color trends that change how a room feels
2026’s top interior palettes and how to use them.
Read guide →
Flooring
Small room flooring ideas that make spaces look bigger
Smart choices that open up any room without renovation.
Read guide →
About HomeChisel
Built by a homeowner who was tired of guessing
HomeChisel started from a simple frustration — standing in a hardware store, unsure if 2 gallons of paint would be enough or if I’d need 3. Every calculator I found online was either inaccurate, full of ads, or required a signup.
So I built the tools I wished existed. Free, accurate, no signup required. Every calculator is tested against real-world measurements and updated regularly.
Accuracy first
Based on industry-standard coverage rates
Always free
No paywalls, no account needed
Real-world tested
Validated against actual projects