{"uid":"cap_neQ10Jq1pyAm90cv6MpJS","slug":"construction-calculators-roof-pitch-converter-b6d00d87","name":"Construction Calculators – Roof Pitch Converter","description":"Convert roof pitch (rise per 12), angle or percent slope; get the rafter length multiplier and roof area factor.","url":"https://construction-calc.x402tookit.com/roof-pitch?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":[],"properties":{"pitch":{"type":"number","description":"Rise per 12 in of run, for example 6 for 6:12"},"runFt":{"type":"number","description":"Horizontal run in feet, to get the rafter length"},"percent":{"type":"number","description":"Slope percent (instead of pitch)"},"angleDeg":{"type":"number","description":"Roof angle in degrees (instead of pitch)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"asOf":{"type":["null","string"]},"class":{"type":["null","string"]},"source":{"type":["null","string"]},"reasons":{"type":["array","null"],"items":{"type":"string"}},"summary":{"type":["null","string"]},"verdict":{"type":["null","string"]},"angleDeg":{"type":["null","number"]},"degraded":{"type":["boolean","null"]},"disclaimer":{"type":["null","string"]},"notChecked":{"type":["array","null"],"items":{"type":"string"}},"slopePercent":{"type":["null","number"]},"areaMultiplier":{"type":["null","number"]},"pitchRisePer12":{"type":["null","number"]},"rafterLengthFt":{"type":["null","number"]},"rafterMultiplier":{"type":["null","number"]}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_4R9XZnScpe9ZMDOwcJvhX","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Converts roof pitch, angle, or percent slope into rise/run metrics, rafter length multiplier, and roof area factor.","exampleAgentPrompt":"What's the rafter multiplier and roof area factor for a 6:12 pitch roof, and if the horizontal run is 18 feet, what's the actual rafter length?","exampleUseCases":[{"title":"Estimating materials for a new roof","prompt":"I'm pricing out roofing shingles for a 6:12 pitch roof with a 22-foot horizontal run — can you give me the area multiplier and rafter length so I can calculate total surface area?"},{"title":"Converting architect's angle to pitch","prompt":"My architect drew the roof at a 35-degree angle but my framing crew works in rise-per-12 pitch — can you convert 35 degrees to pitch and tell me the rafter multiplier?"},{"title":"Checking if slope meets code from grade percent","prompt":"The grading plan shows a 50 percent slope — what's that in degrees and rise-per-12 pitch so I know if it meets the minimum roof pitch code?"}],"resultDescription":"Returns the roof pitch as rise-per-12, angle in degrees, slope percent, rafter multiplier, optional rafter length in feet (if run provided), and area multiplier — all in a single JSON response.","failureModes":["Missing all three input parameters (pitch, angleDeg, percent) results in an error — at least one must be provided","Non-numeric or out-of-range values (e.g. negative pitch) may return null fields or a degraded response","Very large or physically impossible angles (≥90°) may produce null or undefined output values","Network or payment authorization failure returns a 402 or connection error before any calculation is performed"],"whenToPreferThis":"Use this endpoint when you need fast, accurate roof pitch conversions between rise-per-12, degrees, and percent slope — especially when you also need the rafter multiplier or area factor for material estimation. Prefer this over manual trigonometry or generic math APIs when roofing-specific outputs like rafter length and area multiplier are required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-11-04T13:31:18.986Z","isFirstParty":false,"canonicalSlug":"construction-calculators-roof-pitch-converter-b6d00d87"}