About ShedCalc
Free, unbiased shed calculators and planning tools — built to give you a straight answer, not a sales pitch.
Why ShedCalc exists
Most shed calculators are built by companies that also sell sheds, kits, or materials. That creates a quiet conflict of interest: their tools can nudge you toward a bigger, pricier build than you actually need. ShedCalc was created to be the opposite — a set of genuinely neutral tools from someone who has nothing to sell you.
We don't sell sheds, we don't take retailer commissions, and we don't gate our tools behind a sign-up form. That independence is the whole point: the numbers you get here are tuned to help you plan accurately, not to benefit anyone else.
How our tools work
Every calculator is designed to be transparent. Rather than handing you a single number from a black box, our tools show the assumptions and the math behind each result so you can sanity-check it and adjust it to your build. The Shed Material Calculator, for example, breaks your project into an itemized, shopping-ready list — studs, plates, rafters, siding, sheathing, and roofing — and explains exactly how each quantity was reached, including a sensible waste allowance.
Our estimates follow standard light-frame construction practice. They are meant as a strong, honest starting point for planning and shopping — not as a substitute for a final design, professional advice, or your local building requirements. You can read more about that in our disclaimer.
What we're building
ShedCalc is an independent project, and it's growing. The Material Calculator is live today, and dedicated Size, Cost, and Permit tools are on the way — each held to the same standard of being free, transparent, and unbiased. You can already browse material lists for common shed sizes to plan your build.
Get in touch
We genuinely want the tools to be accurate and useful. If you spot something that looks off, have a suggestion, or just want to share what you're building, please get in touch — feedback and corrections are always welcome and help make ShedCalc better for everyone.
ShedCalc — Free, unbiased shed calculators — no sales pitch.