Health & Fitness Calculators

Question 1

How do I calculate my BMI?

Accepted Answer

To calculate your Body Mass Index (BMI), divide your weight in kilograms by your height in meters squared. The formula is: BMI = weight(kg) / height²(m²). For example, if you weigh 70kg and are 1.75m tall, your BMI is 70 ÷ (1.75 × 1.75) = 22.9. A BMI between 18.5 and 24.9 is considered normal weight.

Question 2

How many calories should I eat to lose weight?

Accepted Answer

To lose weight, you need to create a calorie deficit by consuming fewer calories than you burn. A safe and sustainable rate of weight loss is 0.5-1kg (1-2lbs) per week, which requires a daily deficit of 500-1000 calories. First, calculate your Total Daily Energy Expenditure (TDEE), then subtract 500-1000 calories from this number. However, women should not consume fewer than 1200 calories and men not fewer than 1500 calories per day without medical supervision.

Question 3

What is BMR and how is it calculated?

Accepted Answer

Basal Metabolic Rate (BMR) is the number of calories your body needs to maintain basic physiological functions while at rest. The most common formula for calculating BMR is the Mifflin-St Jeor equation: For men: BMR = (10 × weight in kg) + (6.25 × height in cm) - (5 × age in years) + 5. For women: BMR = (10 × weight in kg) + (6.25 × height in cm) - (5 × age in years) - 161. To estimate your total daily calorie needs, multiply your BMR by an activity factor.

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