Accurate, embeddable trade references — use any of these on your own site, blog, or estimate. The only ask: keep the link back to CalcWright in the embed code.
Convert any roof pitch to its angle and the slope factor that turns footprint into true roof area.
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How much ground one cubic yard covers at common depths — plus bag counts.
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Allowable ampacity of copper conductors by AWG, per NEC Table 310.16.
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The key rise, run, and clearance limits for code-compliant stairs (IRC typical).
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How many bags of concrete mix make a cubic yard — by bag size.
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Area one cubic yard covers by depth, plus approximate weight.
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How far a gallon goes — and how much paint to buy.
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How many units cover a square foot of wall, with mortar joints.
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Sheets, screws, and joint compound for a drywall job.
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What you order vs what you actually get (surfaced, dry).
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Maximum joist span for Southern Pine (IRC R507.5, 40 psf live).
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Longest copper run before 3% voltage drop, at the circuit's rated load.
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Practical flow (GPM) through copper and PEX at 2–4 ft/s.
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Rebar number, diameter, weight, and where each size is used.
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How deep to set posts — the rule, plus typical frost-line depths.
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Cooling capacity (BTU) by room size — EPA / ENERGY STAR guide.
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