Resting energy expenditure predictive equations
| Name | REE equation |
| ASPEN-SCCM Guidelines2 weight-based equation | 25–30 kcal/kg/day |
| Harris-Benedict equation4 | |
| Female | 655.0 + [9.6 × weight (kg)] + [1.7 × height (cm)] − [4.7 × age (years)] |
| Male | 66.0 + [13.7 × weight (kg)] + [5.0 × height (cm)] − [6.8 × age (years)] |
| Mifflin-St Jeor equation5 | |
| Female | [9.99 × weight (kg)] + [6.25 × height (cm)] − [4.92 × age (years)] − 161.00 |
| Male | [9.99 × weight (kg)] + [6.25 × height (cm)] − [4.92 × age (years)] + 5.00 |
| Penn State University equation6 7 | (MSJ × 0.96) + (Ve × 31) + (Tmax × 167) − 6212 |
ASPEN, American Society for Parenteral and Enteral Nutrition; MSJ, Mifflin-St Jeor equation; REE, resting energy expenditure; SCCM, Society of Critical Care Medicine; Tmax, maximum temperature in °C; Ve, maximum ventilation in L/min.