💪 Health & Fitness Calculators
Plan nutrition and training with straightforward calculators. Estimate daily protein needs, calorie targets, BMI, and workout numbers using standard published formulas. These are general wellness tools — not medical advice.
Protein Intake Calculator
Your daily protein target in grams, based on weight, activity and goal.
🔥TDEE Calculator
Your daily calorie needs with the Mifflin-St Jeor equation, plus cut, maintain and bulk targets.
👙Bra Size Calculator
Your US band and cup size from two measurements, plus sister sizes.
📏Body Fat Calculator
Estimate body fat percentage with the U.S. Navy tape-measure method.
🏋️One Rep Max Calculator
Estimate your 1RM from any hard set with the Epley or Brzycki formula, plus a training percentage chart.
😴Sleep Cycle Calculator
The best bedtime or wake-up time based on 90-minute sleep cycles.
Frequently asked questions
How much protein do I need per day?
General guidance ranges from about 0.8 g/kg for sedentary adults up to 1.6–2.2 g/kg for active people building muscle. Our protein intake calculator personalizes it by weight, activity, and goal.
Is this medical advice?
No. These calculators provide general information only. Talk to a doctor or dietitian for personal guidance.