How it works
Choose the context closest to the intended use. The calculator multiplies body weight in kilograms by a scenario-specific grams-per-kilogram range and shows a midpoint per meal.
Input query strings and outputs
Use an input name in this page’s URL as ?name=value, and join additional inputs with &. Portable shared links may instead use the compact ?ac= state parameter.
Input query strings
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?unitSystem=Weight unitsChoice · Required · Default: metric · Accepted values: metric, imperial
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?weightKg=Body weightNumber · Required · Default: 70 · Used when unitSystem = metric
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?weightLb=Body weightNumber · Required · Default: 154 · Used when unitSystem = imperial
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?scenario=Activity or life-stage referenceChoice · Required · Default: general · Accepted values: general, older, endurance, strength, weightLoss, pregnancy
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?meals=Meals or feedings per dayNumber · Required · Default: 4
Outputs
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proteinRangeEstimated daily protein rangeText · Primary output
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midpointRange midpointNumber · Suffix: g/day
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perMealMidpoint per mealNumber · Suffix: g
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energyRangeEnergy from proteinText
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factorWeight factorText
Medical limit
Kidney function, pregnancy, age, illness, energy intake, and training can materially change an appropriate target.