About

What this site is

Figured Right is a collection of free calculators for home improvement and construction materials. It helps you work out how much to buy and what it may cost before you head to the store or call a supplier.

How the calculators work

• Formulas are shown. Every calculator explains its math and lists its assumptions on the page.
• Calculations run in your browser. There are no accounts and no database of your inputs. Your values are kept in the page address so you can reload or share a result; see the Privacy Policy.
• The math is tested. Each calculator's logic has automated tests covering unit conversions, rounding, waste margins and invalid input.
• No invented prices. Cost estimates use prices you enter, because material prices vary by region and change often.

The formulas, sources and testing are described in detail in How we calculate.

What the calculators are not

Results are estimates for planning. They are not engineering, structural or legal advice. Requirements for things like slab thickness, reinforcement, post depth and permits depend on your project and local codes. Check with your local building department or a qualified professional.

Who runs the site

Figured Right is an independent Swedish project providing free calculators for construction, home improvement and workshop tasks. Our goal is to make everyday calculations simpler, clearer and more accessible.

The site is run by Claes Daniel Ungerfält, a sole trader (enskild näringsverksamhet) based in Sweden.

Feedback and corrections

If you find a calculation that looks wrong, or a statement that needs a better source, pleaseget in touch. Corrections are reviewed and the affected page is updated.