Weight Loss Calculator:
Enter the values of Basal Metabolic Rate, BMR, Activity Factor, A and Weight Loss Calories, WLC to determine the value of Calories per day, W.
Weight Loss Formula:
Weight loss involves a reduction in body weight achieved by managing calorie intake, physical activity, and metabolic factors. It is typically measured in pounds or kilograms and can result from a combination of fat, water, and muscle loss. Sustainable weight loss is achieved by creating a calorie deficit, where the calories burned exceed the calories consumed.
The Basal Metabolic Rate (BMR) represents the minimum calorie requirement for the body to perform essential functions, such as breathing and digestion, while at rest. Physical activity level, age, gender, and weight-loss goals influence the total calories needed to achieve and maintain weight loss.
The formula incorporates BMR and an activity factor (A) that adjusts for daily exercise or lifestyle, and subtracts the weight loss target (WLC) to determine daily calorie intake for effective weight management. Setting realistic goals and monitoring progress is crucial for sustainable and healthy weight loss.
Calories per day, W in calories equals the product of Basal Metabolic Rate, BMR in calories and Activity Factor, A minus Weight Loss Calories, WLC in calories.
Calories per day, W = BMR * A – WLC
W = calories per day.
BMR = basal metabolic rate in calories.
A = activity factor.
WLC = weight loss calories in calories.
Weight Loss Calculation:
- A person with a BMR of 1500 calories, an Activity Factor of 1.2, and a target weight loss requiring 500 fewer calories daily aims to determine their required calorie intake.
Given: BMR = 1500cal, A = 1.2, WLC = 500cal.
Calories per day, W = BMR * A – WLC
W = 1500 * 1.2 – 500
W = 1800 – 500
W = 1300cal.
- A person with a BMR of 1600 calories wants a daily intake of 1400 calories to achieve their weight loss goal, with a required caloric deficit (WLC) of 300 calories. Find the activity factor.
Given: BMR = 1600cal, W = 1400cal, WLC = 300cal.
Calories per day, W = BMR * A – WLC
A = W + WLC / BMR
A = 1400 + 300 / 1600
A = 1700 / 1600
A = 1.0625.