Formula
Mifflin-St Jeor BMR from weight, height, age, and sex, then × activity factor for TDEE.
Calorie Calculator
Estimate daily calories (BMR & TDEE) for maintenance planning using age, sex, height, weight, and activity.
Your inputs
About this method
Activity factors
Sedentary 1.2 · Light 1.375 · Moderate 1.55 · Very active 1.725 · Extra active 1.9.
Limitations
Estimates only. Illness, hormones, medications, and body composition change needs. Not medical advice.
Frequently asked questions
What is BMR vs TDEE?
BMR (basal metabolic rate) is calories burned at complete rest. TDEE multiplies BMR by an activity factor to estimate total daily energy expenditure.
Which formula does TimeVent use?
Mifflin-St Jeor: men BMR = 10×kg + 6.25×cm − 5×age + 5; women BMR = 10×kg + 6.25×cm − 5×age − 161. TDEE = BMR × activity multiplier.
How do I use this for weight loss or gain?
A common planning approach is a modest deficit or surplus around TDEE (for example ±300–500 kcal), but needs vary. Ask a clinician or dietitian for personalised targets.