Home & DIY Calculators

Calculate how many gallons of paint you need for a room. Free, instant.

Calculate how many tiles you need for a room, including waste. Free, instant.

Calculate how many bags or cubic yards of mulch you need. Free, instant.

Calculate concrete volume and number of bags needed for a slab. Free, instant.

Calculate how many rolls of wallpaper you need for a room. Free, instant.

Calculate how many boxes of flooring you need for a room. Free, instant.

Estimate how many moving boxes you'll need based on your home size. Free, instant.

Calculate how many fence posts and panels you need. Free, instant.

Calculate board feet and estimated cost for lumber. Free, instant.

Calculate roofing squares and shingle bundles needed. Free, instant.

Calculate pavers, gravel base, and sand needed for a patio. Free, instant.

Calculate linear feet and boards of baseboard trim needed for a room. Free, instant.

Calculate how many drywall sheets you need for a room. Free, instant.

Calculate gutter sections and downspouts needed for a roofline. Free, instant.

Calculate total R-value for stacked insulation layers. Free, instant.

Calculate voltage drop for an extension cord or wire run by gauge and length. Free, instant.

Calculate how much gravel you need in cubic yards and tons, plus estimated cost. Free, instant.

Calculate how many gallons of wood stain you need based on surface area and coverage rate. Free, instant.

Calculate how many tubes of caulk you need based on joint length and bead width. Free, instant.

Calculate how many deck boards you need for a deck's dimensions and board spacing. Free, instant.

Calculate how many rebar sticks you need for a concrete slab's reinforcement grid. Free, instant.

Calculate how many rolls of sod you need for a lawn area, plus estimated cost. Free, instant.

Calculate how many yards of fabric you need to sew curtains for a window. Free, instant.

Check your total connected load against a circuit breaker's safe continuous-load rating. Free, instant.