About BackyardGearCalc

BackyardGearCalc exists to stop the most expensive yard mistake: buying the wrong size. A 42 inch deck on four acres, a single-stage snow blower on a gravel drive, a patio heater that cannot warm the patio. Every one of those is a sizing problem, so the site starts with calculators and ends with gear that fits the answer.

How we research

We do not test products in person, and we will never say we did. Every recommendation is built from sources a reader can check:

• Manufacturer specifications, operator manuals and warranty terms.
• Engine emissions certifications (EPA and California Air Resources Board) and safety listings (UL, ETL, CSA) where they apply.
• The U.S. Consumer Product Safety Commission recall database.
• University extension guidance for seeding rates, fertilizer, pH, weed timing and mowing heights.
• The recurring themes in verified owner reviews: what owners consistently praise and consistently complain about, never a single anecdote.

How the calculators work

Each calculator shows its formula and assumptions on the page. Mowing time uses deck width, a 15 percent overlap between passes and an efficiency factor for turns and obstacles. Snow clearing time uses passes, walking speed by snow depth and turnaround time. Seed, fertilizer and lime calculators use extension-published rates. The same math produces the tables, so a page and its calculator never disagree.

How we make money

As an Amazon Associate we earn from qualifying purchases. When you click a product link and buy, Amazon pays us a commission at no extra cost to you. That is the whole business model. It is why every product link goes to a specific, verified listing, and why we sometimes tell readers to buy less: a recommendation that does not fit your yard gets returned, and it costs us your trust. Read the full affiliate disclosure.

What we will not do

• Claim hands-on testing, invent owner quotes or publish ratings we did not earn.
• Give professional advice. Chemical labels, operator manuals, licensed electricians, certified arborists and your local codes always come first. See the disclaimer.
• Sell rankings to brands.

Spotted an error? Tell us and we will check it against the source and fix it.