ProTradeCalc is a set of free material and cost calculators for people who order concrete, stone, asphalt, soil and lumber for a living — and for homeowners who want to walk into the yard knowing what to ask for.
Why it exists
Most online calculators stop at a volume. A cubic-yard figure is not something you can phone in to a plant or pick up at a supply yard. Every ProTradeCalc result is written the way the material is actually sold: tons in quarter-ton steps, bulk soil in half yards, bags rounded up, truckloads counted, and a delivered cost range next to it. Waste is applied in the open so you can see it and change it.
How the numbers are kept honest
- Every formula is published on the page it powers, with a worked example you can check by hand.
- Densities and bag yields come from manufacturer data sheets and industry references, and are editable in the calculator rather than hidden.
- The math is a small, dependency-free library with an automated test suite that asserts known identities — for example that one cubic yard of concrete is exactly 45 × 80 lb bags.
- Cost ranges are national averages from published cost guides, re-checked monthly, and every cost page lists its sources. They are for budgeting; the calculator lets you replace them with your own quotes.
The full method, including every density and yield used, is on the methodology page.
Who runs it
ProTradeCalc is independently built and maintained. There is no account, no email capture and no data sold. The site is supported by advertising and, where a product is recommended, affiliate links — see the privacy policy.
What's here today
6 calculators across paving, aggregate and landscaping, each with a cost guide and size-specific pages. Concrete and masonry, framing and lumber, and drywall and interior sections are being built next, in that order.
Found an error?
If a number looks wrong, it probably matters to someone's order. Tell us — include the inputs you used and we will check it against the source data and fix it.