Free calculators for painting, tiling, flooring, and every DIY project in between. No signup. No ads. No downloads.
Gallons needed by room size, coats, doors, and windows.
Tiles needed with waste factor for any floor or wall.
Rolls needed with pattern repeat waste.
Board feet, linear feet, and cost for any lumber order.
Sheets, joint compound, tape, and screws needed.
Square footage and cost for hardwood, laminate, tile, vinyl, carpet.
Wire gauge by amps, distance, and voltage drop.
Materials and labor by size, material, and features.
DIY vs contractor pricing for 20+ common repairs.
How long projects take by experience level.
When to do it yourself and when to call a pro.
Read →Every tool you need organized by priority tier.
Read →Fix any size hole from nail pops to large damage.
Read →Breaker panels, circuits, and when to call an electrician.
Read →Every tool on this site runs entirely in your browser. No accounts, no tracking, no ads. Your measurements and project plans stay on your device.
We built these tools because every trip to the hardware store starts with the same question: how much do I need? Now you can figure it out before you leave the house.