Loona Calculators
Tell this calculator your details and your goal — lose, maintain or gain weight — and get a daily calorie target based on your real energy needs, with a built-in safety minimum.
The target uses a 500 kcal daily deficit, which changes weight by roughly 0.5 kg per week — a steady, sustainable pace.
Eating fewer than 1,200 kcal per day risks nutrient deficiencies and is not recommended without medical supervision, so this calculator never suggests less.
It is a starting target, not a personal plan. For medical conditions, pregnancy or a structured diet, please consult a doctor or dietitian.