This is a simple form with input fields for weight, height, age, and activity level. When the button is clicked, it uses the input values to calculate the total daily energy expenditure (TDEE) using the Harris-Benedict equation. Finally, the function displays the result on the page.
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A calorie calculator works by using a person's age, weight, height, and level of physical activity to estimate the number of calories needed to maintain their current weight. It can also be used to estimate the number of calories needed to gain or lose weight.
To use a calorie calculator, a person typically enters their age, weight, height, and level of physical activity into the calculator. The calculator then uses this information to estimate the number of calories needed to maintain the person's current weight. If the person wants to gain or lose weight, they can adjust the calculator to reflect their desired weight change and the calculator will provide an estimate of the number of calories needed to achieve that change.
It's worth noting that calorie calculators are just estimates and may not be 100% accurate for all individuals. Factors such as genetics, hormone levels, and overall health can affect a person's metabolism and how many calories they need. It's always a good idea to consult with a healthcare professional or a registered dietitian to determine an appropriate calorie intake for your individual needs.
There are several ways that a calorie calculator can be used:
To maintain a healthy weight: A calorie calculator can help a person determine how many calories they need to consume to maintain their current weight. By tracking their daily calorie intake and making sure they are consuming the appropriate number of calories, a person can maintain a healthy weight.
To lose weight: A calorie calculator can help a person determine how many calories they need to consume to lose weight. By reducing their daily calorie intake to a level below their estimated maintenance needs, a person can create a calorie deficit that can lead to weight loss.
To gain weight: A calorie calculator can help a person determine how many calories they need to consume to gain weight. By increasing their daily calorie intake to a level above their estimated maintenance needs, a person can create a calorie surplus that can lead to weight gain.
To support athletic training: A calorie calculator can help an athlete determine how many calories they need to consume to support their training needs. By consuming the appropriate number of calories, an athlete can ensure that they have enough energy to support their training and recovery.
To plan meals: A calorie calculator can help a person plan their meals by providing an estimate of the number of calories needed to meet their daily calorie needs. This can be helpful for people who are trying to lose, gain, or maintain weight, or for athletes trying to support their training needs.