BMR, TDEE and exact calorie targets for weight loss, maintenance and muscle gain at age 46.
Using the Mifflin-St Jeor equation with average US height and weight for a man aged 46, the resting metabolic rate (BMR) is approximately 1759 kcal/day. With typical daily activity included, total calorie expenditure (TDEE) ranges from 2110 kcal (sedentary) to 3034 kcal (very active).
| Goal | Daily Calories | Expected Result |
|---|---|---|
| 🔵 Aggressive weight loss | 1668 kcal | ~0.75 kg/week |
| 📉 Weight loss | 1918 kcal | ~0.5 kg/week |
| ✅ Maintenance | 2418 kcal | Weight stable |
| 💪 Lean bulk | 2718 kcal | ~0.25 kg/week |
| 🏋️ Aggressive bulk | 2918 kcal | ~0.5 kg/week |
| Activity Level | Description | Daily Calories |
|---|---|---|
| Sedentary | Desk job, minimal movement | 2110 kcal |
| Lightly active | 1–3 workouts/week | 2418 kcal |
| Moderately active | 3–5 workouts/week | 2726 kcal |
| Very active | Hard training 6–7 days/week | 3034 kcal |
Metabolic rate declines approximately 1–2% per decade after age 30, driven primarily by muscle loss (sarcopenia) rather than any inherent slowdown. At age 46, your BMR of 1759 kcal reflects your current muscle mass, height and hormonal status. The single most effective way to maintain or raise your BMR is resistance training — each kilogram of lean muscle burns roughly 13 kcal/day at rest.
| Age | Estimated BMR (man) | Change vs age 46 |
|---|---|---|
| 36 | 1809 kcal | +50 kcal |
| 41 | 1784 kcal | +25 kcal |
| 46 | 1759 kcal | — |
| 51 | 1734 kcal | -25 kcal |
| 56 | 1709 kcal | -50 kcal |
| Macro | % of Calories | Grams/day | Calories |
|---|---|---|---|
| Protein | 30% | 181 g | 724 kcal |
| Carbohydrates | 40% | 242 g | 968 kcal |
| Fat | 30% | 81 g | 729 kcal |
At age 46, protein intake is especially important. Aim for at least 71–89 g/day to maintain muscle mass, whether you're in a deficit, at maintenance, or in a surplus.
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