Free home improvement calculators

Turn your measurements into a shopping list. Fast, free, and built for your phone in the store aisle.

Concrete Calculator

Cubic yards and bags for slabs, footings and post holes.

Paint Calculator

Gallons of paint for walls and ceilings, by room size.

Flooring Calculator

Square feet and boxes of laminate, vinyl plank, hardwood or tile.

Tile Calculator

Tiles, boxes and grout for floors, walls and backsplashes.

Drywall Calculator

Sheets of drywall plus screws, mud and tape for a room.

Roofing Calculator

Roof area, squares and bundles of shingles from your footprint and pitch.

Deck Calculator

Deck boards, joists and screws for a rectangular deck.

Fence Calculator

Posts, rails, pickets or panels and concrete for a new fence.

Mulch Calculator

Cubic yards or bags of mulch, topsoil and compost for beds.

Gravel Calculator

Cubic yards and tons of gravel, crushed stone, sand or river rock.

Square Footage Calculator

Area of rooms, yards and odd shapes in sq ft, sq yd and m².

Latest guides

How Many Bags of Concrete Do I Need? (Chart + Examples)

How to work out how many 80, 60 or 40 lb bags of concrete you need for a slab, post holes or a pad, with a quick chart and worked examples.

How Much Paint Do I Need for a Room? A Simple Guide

Work out how many gallons of paint you need for a bedroom, living room or ceiling, with the formula, a room-size chart and tips to avoid buying too much.