Health Calculators

BMR Calculator for Age 33 Calculates BMR for an adult age 33 using the Mifflin-St Jeor equation. Enter the sex and age. Educational estimate only. Open calculator → BMR Calculator for Age 49 Calculates BMR for an adult age 49 using the Mifflin-St Jeor equation. Enter the sex and age. Educational estimate only. Open calculator → BMR Calculator for Age 65 Calculates BMR for an adult age 65 using the Mifflin-St Jeor equation. Enter the sex and age. Educational estimate only. Open calculator → BMR Calculator for Women Estimates basal metabolic rate for women using the Mifflin-St Jeor equation. Enter the sex and age. Educational estimate only. Open calculator → Body Surface Area Calculator – Haycock Calculates body surface area using the Haycock formula. Enter the height and weight. Educational estimate only. Open calculator → Calorie Calculator – 50% Adjustment Calorie Calculator – 50% Adjustment calculator with a clear formula, worked example, inputs, and educational interpretation. Sample: 1,100 kcal. Open calculator → Calorie Calculator – Age 28 – Maintenance Calorie Calculator – Age 28 – Maintenance calculator with a clear formula, worked example, inputs, and educational interpretation. Sample: 2,522.6 kcal/day. Open calculator → Calorie Calculator – Age 38 – Weight Gain Calorie Calculator – Age 38 – Weight Gain calculator with a clear formula, worked example, inputs, and educational interpretation. Sample: 2,745.1 kcal/day. Open calculator → Calorie Calculator – Age 48 – Weight Loss Calorie Calculator – Age 48 – Weight Loss calculator with a clear formula, worked example, inputs, and educational interpretation. Sample: 1,867.6 kcal/day. Open calculator → Calorie Calculator – Age 60 – Maintenance Calorie Calculator – Age 60 – Maintenance calculator with a clear formula, worked example, inputs, and educational interpretation. Sample: 2,274.6 kcal/day. Open calculator → Calorie Calculator – Age 70 – Weight Gain Calorie Calculator – Age 70 – Weight Gain calculator with a clear formula, worked example, inputs, and educational interpretation. Sample: 2,497.1 kcal/day. Open calculator → Calorie Calculator – Age 80 – Weight Loss Convert a calorie allocation into carbohydrate grams with calorie calculator – age 80 – weight loss. Includes the formula, example, and practical interpretation. Open calculator →