Health calculators10 calculators
Updated on June 12, 2026
Estimate the calories you burn cycling using the MET method, from your body weight, riding speed, and ride length — plus the distance covered and the MET intensity.
Calculate your Basal Metabolic Rate using the Mifflin-St Jeor, Harris-Benedict, or Katch-McArdle equation — plus your activity-adjusted daily calorie needs.
Estimate your body fat percentage using the US Navy circumference method.
Check your Body Mass Index for insights into your health.
See how many calories any activity burns — by duration, distance, steps, or reps.
Estimate total body water and the free water deficit used to correct hypernatremia, from weight, patient group, and serum sodium.
Calculate the HOMA-IR insulin resistance index from fasting glucose and insulin, in mg/dL or mmol/L, with an interpretation band.
Calculate prostate volume from three ultrasound or MRI dimensions using the ellipsoid formula, plus estimated gland weight and PSA density.
Estimate the calories burned rucking (walking with a loaded pack) using the Pandolf equation, from your body weight, load, speed, grade, terrain, and time.
Solve any one of pace, time, or distance from the other two. Plan your race or training run.