Clinical Nutrition & Metabolic Support
Every clinical nutrition & metabolic support calculator on CalcEngines — unit converters, derived indices and interpretive tools, each with its formula, a worked example and the reference intervals it is judged against.
8 calculators in this section
- GLIM Malnutrition Criteria InterpreterThe GLIM consensus criteria applied exactly as published: one phenotypic criterion and one aetiologic criterion are both required, and severity is graded on the phenotypic criteria alone. A positive screen comes first.
- Harris-Benedict Energy Requirement CalculatorThe 1919 original and the 1984 Roza-Shizgal revision are different equations with different numbers. This computes either, says which, shows the other alongside — and shows where the two cross.
- Mifflin-St Jeor Resting Energy CalculatorResting energy expenditure by the equation current guidance prefers in adults who are not critically ill — with the published accuracy that matters more than the number, and the weight-based targets that have largely replaced stress factors.
- Parenteral Nutrition Macronutrient CalculatorEnergy from the grams in the bag, with the right densities — dextrose monohydrate at 3.4 kcal/g, not 4 — plus the glucose infusion rate and lipid dose against their published ceilings, and both calorie conventions side by side.
- Penn State Equation Calculator (Ventilated)The equation the Academy of Nutrition and Dietetics recommends for mechanically ventilated adults when indirect calorimetry is unavailable — PSU(2003b), and the PSU(2010) modification for patients 60 and over with a BMI of 30 or more.
- Protein Requirement Calculator (g/kg/day)Grams of protein a day from weight and a published g/kg target, with the guideline named on every option — and the two options that are stated per kg of ideal weight rather than actual, which is the trap.
- Respiratory Quotient (RQ) CalculatorVCO₂ divided by VO₂, with the substrate values and the 0.67 to 1.3 physiologic range — and an honest account of what RQ can and cannot be used for, because the overfeeding teaching is much weaker than it is usually stated.
- Weir Equation Energy Expenditure CalculatorWhat a metabolic cart actually computes: measured energy expenditure from oxygen consumption and carbon dioxide production, with and without the urinary nitrogen term, and the three coefficients different sources print.