Documentation of how to use Calorie Calculator

Inputs

First enter the inputs

1. Age: How old the user is in years
2. Gender: Gender of the user
3. Height: The user's height in cm
4. Weight: The user's weight in pounds
5. Activity: The user's daily activity level
6. Goal: The user's goal in terms of weight gain/loss

The formula used to calculate the basal metabolic rate (BMR), which is how many calories the body uses in order to simply live, is as follows:

(4.535 * inputs['weight']) + (6.25 * inputs['height']) - (5 * inputs['age']) + 5 //(male)

(4.535 * inputs['weight']) + (6.25 * inputs['height']) - (5 * inputs['age']) - 161 //(female)

This is known as the Mifflin-St Jeor equation, which is widely used as a base equation for BMR.

Based on the level of activity the user experiences on a daily basis, a physical activity value, or PAV is assigned. This is a multiplier which accounts for how many calories the user burns due to activity outside of simply being.

The BMR and the PAV are multiplied and as a result the maintenance calories of an individual are attained.

Next, based on the user's goals, "New Calories" are calculated. If the user would like to gain one pound per week, they simply need to intake ten percent more calories, and in order to decrease their weight by one pound per week, they must intake ten percent less calories.

Lastly, the information about maintenance and "New Calories" is displayed for the user, along with some tips about how to go about eating for health benefits.