The Mifflin-St Jeor formula
Men: BMR = 10 × weight(kg) + 6.25 × height(cm) − 5 × age + 5
Women: BMR = 10 × weight(kg) + 6.25 × height(cm) − 5 × age − 161
This is the most accurate widely-used formula, accurate to within ±10% for most people.
Macros breakdown
- Protein: 1.6–2.2g/kg to preserve/build muscle
- Fat: 0.8–1g/kg for hormones
- Carbs: remainder of your calorie target