Disclaimer

Figured Right offers free calculators and guides to help you plan home improvement projects. Please read this page before relying on any result.

All results are estimates

Every calculator produces a planning estimate. It is based on the formulas and assumptions described on each calculator page and in How we calculate. Real projects vary: ground is uneven, forms flex, materials differ from their nominal size, and some material is always lost to cutting and handling.

You are responsible for your inputs

Results are only as accurate as the measurements and settings you enter. Check your units, measure carefully, and review the step-by-step breakdown shown with each result.

Materials and packaging vary

Lumber is sold by nominal size and its actual dimensions can differ. Concrete products yield different volumes depending on the product and manufacturer. Prefabricated panels, bags and other products can change. Always check the label, data sheet or installation instructions for the exact product you buy.

Prices are estimates, not quotes

Cost figures are calculated only from prices you enter. They are not offers, quotes or price guarantees from us or anyone else, and they usually exclude delivery, fees, taxes, tools and labor. Get written quotes from your suppliers and contractors.

Local building codes differ

Requirements for things like footing and post depth, slab thickness, reinforcement, fence height, setbacks and permits are set by your state, county, city or homeowners' association, and they change over time. Our calculators do not check whether a project complies with any code or rule. Contact your local building department before you build, and in the US call 811 before you dig.

Not a substitute for professionals

The calculators do not assess structural safety, load capacity, soil conditions, drainage or durability. They do not replace advice from a licensed engineer, architect, building official or qualified contractor. If your project is structural, load-bearing, or affects safety, consult a qualified professional.

Verify before you buy or build

Before purchasing materials or starting work, verify critical quantities, dimensions and costs independently, for example with your supplier, contractor or a second calculation.

No guarantee of fitness for your project

We work to keep the formulas correct and test them, but we cannot guarantee that every result is error-free or suitable for every project. You use the calculators and guides at your own discretion and risk. See theTerms of Use for the full terms, including the limitation of liability.

Found an error?

If a result looks wrong, please contact us with the values you entered. We review every report.