🏗️ Construction & Home Improvement Calculators

Free material calculators for DIY and professional construction projects. Get accurate quantity estimates for paint, tiles, flooring, roofing, and more — reducing waste and saving money.

Interior & Flooring

Paint Calculator

How many gallons of paint to cover any room or surface

Tile Calculator

Calculate tile quantity and cost including waste factor

Flooring Calculator

Estimate flooring material needed for any room

Drywall Calculator

Calculate drywall sheets for walls and ceilings

Square Footage Calculator

Measure area of rooms and irregular spaces

Exterior & Structural

Roofing Calculator

Estimate roofing shingles and materials needed

Brick Calculator

Calculate bricks needed for any wall or project

Concrete Calculator

Calculate concrete volume for slabs and footings

Gravel Calculator

Estimate gravel, sand, and aggregate quantities

How to Use These Calculators

Enter your room or area dimensions and the calculators automatically add a standard waste factor (typically 10–15%) so you order enough material without significant overstock. All formulas follow industry-standard guidelines used by professional contractors.

Results are estimates — always verify with your supplier and account for site-specific factors before purchasing materials.

Last Updated: July 4, 2026