Use your stats to get a calorie target and daily protein/carbs/fats.
We use the Mifflin-St Jeor equation and a simple activity factor.
These are estimates. Use them as a starting point, then adjust based on progress.
1 g protein ≈ 4 kcal, 1 g carbs ≈ 4 kcal, 1 g fat ≈ 9 kcal. If you track macros closely, round to easy numbers you’ll actually stick to.