Hoot’s calorie targets are powered by science—but simplified for everyday use.
Here’s how it works:
Your Baseline: Mifflin-St Jeor Method
We start with the most trusted formula in nutrition:For women:
(10 × weight[kg]) + (6.25 × height[cm]) – (5 × age) – 161
For men:
(10 × weight[kg]) + (6.25 × height[cm]) – (5 × age) + 5
Adjust for Activity Level
We apply a multiplier based on your self-reported activity:Sedentary: ×1.2
Lightly active: ×1.375
Moderately active: ×1.55
Active: ×1.725
Apply a Calorie Deficit (for weight loss)
If you want to lose weight, Hoot subtracts:500 calories/day for 0.5 lbs/week
1,000 calories/day for 1 lb/week
2,000 calories/day for 2 lbs/week (not recommended for most users)
Macro Breakdown
We personalize your macros:Protein: 1 gram per pound of your body weight
Fat: 30% of your daily calories
Carbs: Whatever’s left after protein and fat
Safety First
Hoot won’t go below 1,200 calories/day for women or 1,500 for men—because health comes first.
And remember: you can always adjust any targets based on your own plan or preferences.