Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.

12+

Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.

17+

You must be at least 17 years old to access this App.

Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

Calories Intake Calculator Screenshots

iPad

iPhone

About Calories Intake Calculator

How Many Calories Should You Eat Per Day to Gain/Lose Weight?

This is a simple but highly accurate scientific calorie calculator, along with 5 evidence-based tips on how to sustainably reduce calorie intake.

Enter your details in the app calculator below to figure out how many calories you should be eating in a day to either maintain, gain or lose weight.

The calculator is based on the Mifflin-St Jeor equation, a formula that has been shown to be an accurate way of estimating calorie needs in numerous studies.

An average woman needs to eat about 2000 calories per day to maintain, and 1500 calories to lose one pound of weight per week. An average man needs 2500 calories to maintain, and 2000 to lose one pound of weight per week.

However, this depends on numerous factors. These include age, height, current weight, activity levels, metabolic health and several others.