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Free fitness calculators
A few honest tools that give you a real answer on the spot — no email wall, no upsell. When you’re ready to actually track what you eat, AI Calorie Camera makes it a photo-snap instead of a chore.
TDEE & Calorie Calculator →
Find your maintenance calories, a daily target for your goal, and a starting macro split.
Calorie Deficit Calculator →
See the daily deficit and target intake for every weight-loss rate — capped at a safe floor.
BMI Calculator →
Get your body mass index, WHO category, and the healthy weight range for your height — metric or imperial.
BMR Calculator →
Find your basal metabolic rate (Mifflin-St Jeor) — the calories you burn at complete rest.
Macro Calculator →
Turn a calorie target into grams of protein, carbs, and fat — balanced, high-protein, low-carb, or keto.
Body Fat Calculator →
Estimate your body fat percentage with the US Navy tape-measure method — no calipers needed.
The number is the easy part 🧩
Every calculator here gives you a target in seconds. Hitting it day after day is the hard part — that’s what AI Calorie Camera is for. Snap a photo, get an estimate you can correct in a tap, and skip the streaks, guilt, and ads.
Meet AI Calorie Camera →