Health Calculators

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 Calculate accumulated sleep debt from average sleep and days. This variant is framed for evening use. Enter the average sleep and target sleep. Educational estimate only. Open calculator → 1RM Calculator – 10 Reps – Brzycki Estimates one-repetition maximum from a 10-rep lift using the Brzycki formula. Enter the lifted weight and repetitions. Educational estimate only. Open calculator → 1RM Calculator – 15 Reps – Epley Estimates one-repetition maximum from a 15-rep lift using the Epley formula. Enter the lifted weight and repetitions. Educational estimate only. Open calculator → 1RM Calculator – 20 Rep Estimate Estimates one-repetition maximum from a 20-rep lift using a standard 1RM estimation formula. Enter the lifted weight and repetitions. Educational estimate only. Open calculator → 1RM Calculator – 31 Rep Estimate Estimates one-repetition maximum from a 31-rep lift using a standard 1RM estimation formula. Enter the lifted weight and repetitions. Educational estimate only. Open calculator → 1RM Calculator – 44 Rep Estimate Estimates one-repetition maximum from a 44-rep lift using a standard 1RM estimation formula. Enter the lifted weight and repetitions. Educational estimate only. Open calculator → 1RM Calculator – 8 Rep Estimate Estimates one-repetition maximum from a 8-rep lift using a standard 1RM estimation formula. Enter the lifted weight and repetitions. Educational estimate only. Open calculator → 1RM Calculator – Lombardi Formula Estimates one-repetition maximum using the Lombardi formula. Enter the lifted weight and repetitions. Educational estimate only. Open calculator →