🔨 DIY & Home Improvement Calculator Hub
Plan any home project with confidence. Calculate exactly how much material you need so you buy right the first time — no extra trips to the hardware store.
Paint Calculator
Calculate exactly how many gallons of paint you need for walls and ceilings, accounting for doors and windows.
Calculate Paint →Flooring Calculator
Find out how much hardwood, laminate, tile, or carpet you need for any room, including waste factor.
Calculate Flooring →Fence Calculator
Calculate posts, rails, and pickets needed for your fence. Supports wood, vinyl, and chain link styles.
Plan Fence →Concrete Calculator
Figure out how many bags of concrete or cubic yards you need for slabs, posts, footings, and more.
Calculate Concrete →Tile Calculator
Calculate tiles needed for floors, walls, backsplashes, and showers with waste percentage included.
Calculate Tiles →Drywall Calculator
Determine how many drywall sheets you need plus joint compound and tape for any room.
Calculate Drywall →Roofing Calculator
Estimate shingles, underlayment, and other roofing materials based on your roof dimensions and pitch.
Estimate Roofing →Deck Calculator
Calculate decking boards, joists, posts, and hardware needed. Supports wood, composite, and PVC options.
Plan Deck →Wallpaper Calculator
Calculate rolls of wallpaper needed for any room, accounting for pattern repeat and waste.
Calculate Wallpaper →Mulch & Soil Calculator
Find out how many bags or cubic yards of mulch, soil, or gravel you need for garden beds and landscaping.
Calculate Mulch →Electricity Cost
Calculate how much an appliance costs to run per day, month, and year based on wattage and electricity rate.
Calculate Cost →BTU Calculator
Determine the right AC or heater size for your room. Avoid buying a unit that's too big or too small.
Calculate BTUs →📚 DIY Project Planning Guide
Follow these principles to save time, money, and frustration on any project.
Measure Twice, Cut Once
The oldest rule in the book. Double-check every measurement. Use our calculators to verify quantities before buying.
Always Buy 10% Extra
Materials get damaged, cuts don't go perfectly, and mistakes happen. A 10% waste factor saves you a return trip to the store.
Check Permits First
Fences, decks, roofing, and electrical work often require permits. Check with your local building department before starting.
Know When to Hire a Pro
Electrical, plumbing, structural, and gas work should usually be left to professionals. DIY the cosmetic stuff.
Prep Work Is 80% of the Job
Surface prep, taping, priming, and cleaning make the difference between a professional result and a messy one.
Buy Quality Tools
Good tools last a lifetime and make better cuts, smoother finishes, and easier work. Rent expensive tools you'll rarely use.
💡 Quick Material Reference
Paint Coverage
- Interior latex: 350-400 sq ft/gallon
- Exterior latex: 250-350 sq ft/gallon
- Primer: 200-300 sq ft/gallon
- Always apply 2 coats minimum
- Dark-to-light color changes need 3 coats
Concrete Basics
- 60 lb bag covers ~0.45 cubic feet
- 80 lb bag covers ~0.60 cubic feet
- Typical slab: 4 inches thick
- Driveway: 5-6 inches thick
- Set time: 24-48 hours, full cure: 28 days
Lumber Sizes (Actual vs Nominal)
- 2×4 is actually 1.5" × 3.5"
- 2×6 is actually 1.5" × 5.5"
- 2×8 is actually 1.5" × 7.25"
- 4×4 is actually 3.5" × 3.5"
- 1×6 is actually 0.75" × 5.5"
Flooring Estimates
- Hardwood: add 10% waste factor
- Tile (straight lay): add 10% waste
- Tile (diagonal lay): add 15% waste
- Carpet: add 10% for seams
- Laminate: add 10% for cuts
📖 DIY Terms to Know
Ready to Start Your Project?
Pick a calculator above and get your material list in seconds.