Ireton-Jones Energy Equation
Ireton-Jones energy equation for hospitalized patients, with a ventilator-dependent and a spontaneously-breathing form; trauma and burn are diagnosis modifiers on the ventilated form.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Age
- 55 yr
- Weight
- 80 kg
Result: Ireton-Jones EEE 1823 kcal/day — ventilator-dependent form.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Ventilated
- EEE = 1784 − 11 × age + 5 × weight(kg) + 244 × (male) + 239 × (trauma) + 804 × (burn) kcal/day.
- Spontaneous
- EEE = 629 − 11 × age + 25 × weight − 609 × (obese, BMI > 27) kcal/day.
What you enter
- Ventilation status
- Age
- Weight
- Height (spontaneous form, for BMI)
- Sex (male indicator, ventilated form)
- Trauma (ventilated form modifier)
- Burn (ventilated form modifier)
How this is calculated
Ireton-Jones C, Jones JD. Improved equations for predicting energy expenditure in patients: the Ireton-Jones equations. Nutr Clin Pract. 2002;17(1):29-31. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.