{"uid":"cap_mGbvgatqo7PaRQHhys8bJ","slug":"magent-ideal-body-weight-devine-formula-calculator-b8528577","name":"Magent Ideal Body Weight (Devine Formula) Calculator","description":"Devine ideal body weight and 0.4 adjusted body weight from height, sex, and actual weight. Deterministic published formula with citation; not a dosing recommendation.","url":"https://api.magentlab.com/api/calc/ibw_devine","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","HEAD","DELETE"],"type":"string"},"headers":{"type":"object","additionalProperties":{"type":"string"}},"queryParams":{"type":"object","required":["sex"],"properties":{"sex":{"enum":["female","male"],"type":"string","description":"Sex used by Devine (50 kg male, 45.5 kg female base)."},"height_cm":{"type":"number","description":"Height in centimeters. Provide height_cm or height_in."},"height_in":{"type":"number","description":"Height in inches. Devine uses inches: IBW adds 2.3 kg per inch over 60."},"weight_kg":{"type":"number","description":"Actual total body weight in kilograms. Provide weight_kg or weight_lb."},"weight_lb":{"type":"number","description":"Actual total body weight in pounds."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"path":"/api/calc/ibw_devine","count":2,"items":[{"sex":"male","ibw_kg":73,"formula":"devine_ibw_adjbw","adjbw_kg":79.8,"citation":{"id":"devine-1974","doi":null,"title":"Gentamicin therapy","source":"Drug Intell Clin Pharm. 1974;8:650-655","authors":"Devine BJ"},"height_cm":177.8,"height_in":70,"disclaimer":"Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.","adjbw_factor":0.4,"actual_weight_kg":90,"formula_expression":"IBW_kg = 50 (male) or 45.5 (female) + 2.3 * (height_in - 60); AdjBW_kg = IBW_kg + 0.4 * (TBW_kg - IBW_kg) when TBW > IBW, else TBW_kg"},{"sex":"male","ibw_kg":73,"formula":"devine_ibw_adjbw","adjbw_kg":79.8,"citation":{"id":"devine-1974","doi":null,"title":"Gentamicin therapy","source":"Drug Intell Clin Pharm. 1974;8:650-655","authors":"Devine BJ"},"height_cm":177.8,"height_in":70,"disclaimer":"Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.","adjbw_factor":0.4,"actual_weight_kg":90,"formula_expression":"IBW_kg = 50 (male) or 45.5 (female) + 2.3 * (height_in - 60); AdjBW_kg = IBW_kg + 0.4 * (TBW_kg - IBW_kg) when TBW > IBW, else TBW_kg"}]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_eDpUapXa6-7tjWMdemm3j","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Calculates Devine ideal body weight (IBW) and Adjusted Body Weight (AdjBW at 0.4 factor) from sex, height, and actual weight using the published Devine formula with citation.","exampleAgentPrompt":"What's the Devine ideal body weight and adjusted body weight for a male who is 5 feet 10 inches tall and weighs 210 pounds?","exampleUseCases":[{"title":"ICU medication weight-based dosing reference","prompt":"My patient is a female, 162 cm tall, and her actual weight is 95 kg. Can you calculate her Devine ideal body weight and the 0.4 adjusted body weight for clinical reference?"},{"title":"Pharmacist verifying renal dosing weight","prompt":"I need the Devine IBW and adjusted body weight for a male patient who is 68 inches tall and weighs 260 pounds — we're reviewing his dosing weights."},{"title":"Obesity medicine baseline assessment","prompt":"Can you run the Devine formula for a female patient, 155 cm, 110 kg actual weight, and give me both her ideal body weight and adjusted body weight?"}],"resultDescription":"Returns the Devine ideal body weight (IBW) in kilograms, the adjusted body weight (AdjBW) calculated at the 0.4 factor in kilograms, and a citation to the original published Devine formula. The endpoint is deterministic and non-diagnostic — it is not a dosing recommendation.","failureModes":["Missing required 'sex' parameter returns an error","Neither height_cm nor height_in provided results in an error","Providing a height at or below 60 inches (152.4 cm) may produce a zero or negative IBW per the Devine formula logic","Non-numeric or out-of-range height/weight values cause validation errors","Both weight_kg and weight_lb may be omitted if AdjBW is not needed, but absence may affect AdjBW output"],"whenToPreferThis":"Choose this endpoint when you need a deterministic, citable Devine IBW calculation — especially when a 0.4 adjusted body weight is also required for pharmacokinetic or clinical reference. Prefer over general BMI calculators when the downstream need is IBW-specific (e.g., ventilator tidal volume targets, renal dosing weight estimates). It is not a dosing recommendation and should not replace clinical judgment.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T01:19:00.801Z","isFirstParty":false}