Choose Your Calculator
Square Footage Calculator
Calculate area for rooms, flooring, paint coverage, and more. Works for rectangles, triangles, and complex shapes.
Calculate now →Tile Calculator
Find out exactly how many tiles you need. Includes waste percentage and calculates for different tile sizes.
Calculate now →Lumber & Board Feet Calculator
Calculate board feet for lumber purchases. Perfect for decks, framing, and woodworking projects.
Calculate now →Concrete Calculator
Estimate concrete volume in cubic yards or bags. For slabs, footings, posts, and walls.
Calculate now →Wallpaper Calculator
Calculate how many rolls of wallpaper you need. Accounts for pattern repeat and windows/doors.
Calculate now →Paint Calculator
Find out how many gallons of paint you need. Supports different finishes, coats, and ceiling painting.
Calculate now →Mulch Calculator
Calculate cubic yards or bags of mulch for garden beds, landscaping, and pathways.
Calculate now →Gravel Calculator
Estimate tons or cubic yards of gravel for driveways, patios, and landscaping projects.
Calculate now →Drywall Calculator
Find how many sheets of drywall you need, plus joint compound, tape, and screw estimates.
Calculate now →Accent Wall Calculator
Calculate wallpaper for a single feature wall. Perfect for accent walls and statement walls.
Calculate now →Sod Calculator
Calculate how much sod you need for your lawn. Covers pallets, rolls, and cost estimates by grass type.
Calculate now →Fence Calculator
Calculate fence posts, rails, pickets, and panels. Covers wood, vinyl, and chain link with cost estimates.
Calculate now →Why Use Our Calculators?
Always Free
No signup, no fees, no catches
Works Anywhere
Use on your phone at the store
Accurate Results
Based on industry standards
Save Money
Buy the right amount, no waste
Essential DIY Tools
Affiliate Disclosure: As an Amazon Associate, we earn from qualifying purchases. This helps keep our calculators free.
How to Measure for Your Home Project
Accurate measurements are the foundation of any successful DIY project. Whether you're laying new flooring, hanging wallpaper, or pouring a concrete slab, getting the numbers right saves time, money, and frustration.
The Golden Rule: Measure Twice
Always measure twice before cutting or ordering materials. A small measurement error can lead to wasted materials or a trip back to the hardware store.
Add Waste Factor
Most projects require 10-15% extra material for cuts, mistakes, and future repairs. Our calculators include waste estimates so you don't run short.
Use the Right Tools
A laser measure is incredibly helpful for room dimensions. For smaller projects, a quality tape measure and carpenter's square will do the job.
Frequently Asked Questions
How accurate are these calculators?
Our calculators use standard industry formulas and are accurate for planning purposes. Always verify final measurements on-site before ordering materials.
Should I buy extra material?
Yes. We recommend 10% extra for most projects, 15% for tile and flooring with complex patterns. This accounts for cuts, mistakes, and future repairs.
Can I use these on my phone?
Absolutely. All our calculators are mobile-friendly. Use them right at the hardware store while shopping.
How much paint do I need for a room?
A standard 12×12 room with 8-foot ceilings needs about 2 gallons of paint for two coats. Use our paint calculator for an exact estimate based on your room dimensions.
How many cubic yards of mulch do I need?
It depends on the area size and depth. At the recommended 3-inch depth, one cubic yard covers about 108 square feet. Use our mulch calculator to get the exact amount.