About HomeRivet

HomeRivet answers one question for home and garden projects: how much material should I buy? It has 10 free calculators:

• Paint Calculator — How many gallons of paint a room needs, after doors and windows.
• Concrete Calculator — Cubic yards and 40–90 lb bags of concrete mix for a slab.
• Tile Calculator — Boxes of floor tile to buy, with 10% extra for cuts.
• Flooring Calculator — Boxes of hardwood, laminate or vinyl plank for a room.
• Mulch & Soil Calculator — Cubic yards or bags of mulch, topsoil or compost for a bed.
• Square Footage Calculator — Area of a rectangle, triangle or circle in sq ft, sq yd and m².
• Wallpaper Calculator — Single and double rolls of wallpaper, adjusted for pattern repeat.
• Gravel & Sand Calculator — Cubic yards and tons of gravel, crushed stone or sand.
• Deck Board Calculator — Number of surface deck boards, with the recommended gap.
• Insulation Calculator — Thickness for a target R-value and packages to buy.

How we calculate

Every calculator uses a fixed formula whose figures come from manufacturer data sheets or public agencies such as university extension services and the U.S. Department of Energy. Each page explains the formula step by step and links to its sources. The numbers in our guides are produced by the same code as the calculators.

What we do not cover

We only estimate material quantities. We do not give advice on electrical work, gas, structural design, roofing or other work that needs a licensed professional. Results are estimates — always check the coverage or yield printed on the product you buy.