CALCULATOR CATEGORY

Health Calculators

Free health and fitness calculators for BMI, calories, BMR, body fat, ideal weight and other health-related calculations.

TOOLS

Health Calculators

Choose a calculator below to get started.

TDEE Calculator – Age 18 – Sedentary Estimates total daily energy expenditure at age 18 using Mifflin-St Jeor BMR and a sedentary activity factor. Enter the sex and age. Educational estimate only. Open calculator → TDEE Calculator – Age 30 – Moderately Active Estimates total daily energy expenditure at age 30 using Mifflin-St Jeor BMR and a moderately active activity factor. Enter the sex and age. Educational estimate only. Open calculator → TDEE Calculator – Age 40 – Sedentary Estimates total daily energy expenditure at age 40 using Mifflin-St Jeor BMR and a sedentary activity factor. Enter the sex and age. Educational estimate only. Open calculator → TDEE Calculator – Age 50 – Very Active Estimates total daily energy expenditure at age 50 using Mifflin-St Jeor BMR and a very active activity factor. Enter the sex and age. Educational estimate only. Open calculator → Sleep Debt Calculator – Evening Use the Sleep Debt Calculator – Evening to understand the calculation, inputs, method, examples, and practical interpretation. Open calculator → 1RM Calculator – 10 Reps – Brzycki Calculate with the 1rm calculator – 10 reps – brzycki. See the formula, inputs, worked example, and practical guidance. Open calculator → 1RM Calculator – 15 Reps – Epley Calculate with the 1rm calculator – 15 reps – epley. See the formula, inputs, worked example, and practical guidance. Open calculator → 1RM Calculator – 20 Rep Estimate Calculate with the 1rm calculator – 20 rep estimate. See the formula, inputs, worked example, and practical guidance. Open calculator → 1RM Calculator – 31 Rep Estimate Use the 1RM Calculator – 31 Rep Estimate to calculate the requested value with the exact inputs and formula shown. Educational reference only. Open calculator → 1RM Calculator – 44 Rep Estimate Use the 1RM Calculator – 44 Rep Estimate to calculate the requested value with the exact inputs and formula shown. Educational reference only. Open calculator → 1RM Calculator – 8 Rep Estimate Use the 1RM Calculator – 8 Rep Estimate to calculate the requested value with the exact inputs and formula shown. Educational reference only. Open calculator → 1RM Calculator – Lombardi Formula Use the 1RM Calculator – Lombardi Formula to calculate the requested value with the exact inputs and formula shown. Educational reference only. Open calculator →