About DIY Calculators Online

DIY Calculators Online is a small independent site of free Do It Yourself (DIY) calculators for home renovation and building projects: stairs, decks, framing, concrete, patios, walls, paint, tile and wallpaper. Think of it as a renovation materials calculator for each part of the job.

Most calculators online give one number. These aim to give the whole job: every material you need to buy, a drawing of the result, and the formula and building code rules behind it. If a number looks wrong you can check the working yourself.

How the calculators are checked

Each calculator's math is tested against worked examples, and its code limits come from the International Residential Code (IRC) and the American Wood Council deck guide (DCA 6). Local codes vary, so treat results as a plan to check, not an engineered design. For structural work, ask your building department or an engineer.

Contact

Found an error, or want a calculator that isn't here? Email hello@diycalculator.online. Corrections are fixed fast.

The site is free because it shows ads.