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Disclaimer

Last updated: October 29, 2026
In short

Backyard Calculators gives free planning estimates. Use them to budget and to order materials with confidence, and confirm structural, legal and safety details with a qualified professional before you build.

Estimates only

The calculators on Backyard Calculators produce estimates for planning and budgeting. Every result depends on the measurements, units and assumptions you enter, so the numbers are only as good as the inputs behind them.

Real projects also vary with site conditions, ground slope, material sizes, supplier packaging, waste and local building practice. Treat each result as a starting point, not a final order.

Not professional advice

Nothing on this website is engineering, architectural, structural, legal, tax or financial advice. Our guides and calculators do not replace an inspection, a design drawing or a quote from a licensed contractor.

For anything that carries weight or involves safety, such as decks, pergolas, gazebos, retaining walls, sheds, pool equipment and electrical lighting, confirm sizes, loads and installation details with a licensed professional before you build.

Building codes, permits and utilities

Building codes, permit rules, setback distances, fence height limits and pool safety requirements differ by country, state and city. Some projects also need approval from a homeowners association.

Check the rules that apply to your property before you start. Contact your local utility locating service before you dig, because buried gas, water, power and communication lines are a real danger.

Accuracy of our formulas and content

We build our calculators on standard geometry, unit conversions and widely used industry practice, and we review them when we publish or update a page. Even so, we cannot promise that every result or every piece of content is free of errors, or that it fits your exact situation.

Always add a waste allowance, round up to whole packs, boards or bags, and confirm quantities, prices and delivery with your supplier before you buy. If you spot a mistake, please tell us from the contact page and we will look into it.

Cost and price figures

Any cost, price or rate shown on this site is an example or a rough range. Prices change with location, season, supplier, quantity and quality, so use your own local quotes for budgeting.

Safety

  • Wear suitable protective gear when you cut, lift, mix or dig.
  • Never rely on a calculator result to judge whether a structure is safe to stand on, hang from or sit under.
  • Keep children and pets away from open excavations, pools and worksites.

Advertising and external links

This website may show ads and may link to other websites, products or stores. If we ever earn a commission from a link, we will say so on the page. We do not control outside websites, and we are not responsible for their content, products or practices.

Use at your own risk

You use the calculators and the information on this website at your own risk. To the fullest extent allowed by law, Backyard Calculators and its owners are not liable for any loss, damage, injury or cost that results from relying on a result or on any content here.

Questions

If you have a question about this disclaimer, write to us at backyardcalculators@gmail.com or use the contact page. You can also read our Privacy Policy and Terms and Conditions.