Free Health & Fitness Calculators

Use our health and fitness calculators to understand your body better. From BMI and calorie needs to macro splits and training metrics, these tools help you make informed wellness decisions.

Body Metrics

BMI, ideal weight, BMR, TDEE, and body measurement calculators.

Body Composition

Body fat percentage, lean mass, FFMI, and muscle mass calculators.

Anthropometrics

Body surface area, frame size, somatotype, and body index calculators.

Nutrition

Micronutrient, nutrient density, and dietary analysis calculators.

Calories

Daily calorie needs, deficit, surplus, and calorie tracking calculators.

Macronutrients

Protein, carb, fat macro split and IIFYM calculators.

Diet Plans

Keto, intermittent fasting, zone diet, and structured diet calculators.

Energy & Metabolism

BMR, TDEE, and calorie deficit tools.

Calculators coming soon.

Training

One-rep max, pace, and heart rate calculators.

Calculators coming soon.

Weight Loss

Weight loss timelines, deficit planning, and safe rate calculators.

Weight Gain

Weight gain plans, muscle gain timelines, and lean bulk calculators.

Body Recomposition

Body recomposition, maintenance calories, and weight fluctuation calculators.

Strength Training

One-rep max, Wilks score, training volume, and strength standards calculators.

Cardio & Endurance

Running pace, heart rate zones, VO2max, cycling FTP, and calorie burn calculators.

Exercise Science

Plyometric power, swimming efficiency, and exercise equivalence calculators.

Flexibility

Sit-and-reach, ROM assessment, and flexibility scoring calculators.

Vitals & Lab Values

Blood pressure, blood sugar, cholesterol, and spirometry calculators.

Sleep

Sleep cycle, sleep debt, and sleep efficiency calculators.

Hydration

Daily water needs, sweat rate, and electrolyte replacement calculators.

General Health

Kidney function, medication dosing, UV exposure, and health screening calculators.

Endurance & Racing

Running, cycling, triathlon pacing, race prediction, and endurance nutrition calculators.

Sports Performance

Vertical jump, sprint speed, agility, golf handicap, and athletic benchmark calculators.

Team Sports Stats

Baseball ERA, batting average, NFL passer rating, basketball PER, and soccer xG calculators.

Combat Sports

Weight class finder, reach advantage, and fight odds converter calculators.

Clinical Scores

Medical scoring systems like APACHE II, SOFA, Glasgow Coma Scale, and risk assessment tools.

Pregnancy & Pediatric

Pregnancy tests, due dates, pediatric dosing, vaccine schedules, and child growth calculators.

Dosing & Medications

Drug dosage, half-life, pediatric dosing, and medication conversion calculators.

Lab Values

Blood test interpretation, hemoglobin A1c, lipid panels, and renal function calculators.

Cardiology

Cardiac output, valve area, mean arterial pressure, and echocardiogram calculators.

Pulmonary

Lung capacity, tidal volume, FEV1/FVC ratio, and respiratory function calculators.

Emergency & Surgery

Trauma scores, sepsis assessment, and surgical risk calculators.