This is a question that is commonly asked by people who want to lose weight. How many calories do they need to consume in order to lose weight? Well, it all depends.
It depends on how much you weigh now, how tall you are, whether you are a boy or a girl 🙂 , how old you are, and how active you are.
To determine how many calories you need to consume each day, you need to work out your Basal Metabolic Rate (or BMR). This is the number of calories you’d burn if you stayed in bed all day, which is something you hopefully don’t do!
You can follow the formulas below to work it out yourself:
English BMR Formula
Women: BMR = 655 + ( 4.35 x weight in pounds ) + ( 4.7 x height in inches ) – ( 4.7 x age in years)
Men: BMR = 66 + ( 6.23 x weight in pounds ) + ( 12.7 x height in inches ) – ( 6.8 x age in years )
Metric BMR Formula
Women: BMR = 655 + ( 9.6 x weight in kilos ) + ( 1.8 x height in cm ) – ( 4.7 x age in years )
Men: BMR = 66 + ( 13.7 x weight in kilos ) + ( 5 x height in cm ) – ( 6.8 x age in years )
Now, to take into consideration what level (if any) of exercise you do, to determine your total daily calorie needs, multiply your BMR by the appropriate activity factor, as follows:
If you do little or no exercise : Calorie-Calculation = BMR x 1.2
If you do light exercise/sports 1-3 days/week : Calorie-Calculation = BMR x 1.375
If you do moderate exercise/sports 3-5 days/week : Calorie-Calculation = BMR x 1.55
If you do hard exercise/sports 6-7 days a week : Calorie-Calculation = BMR x 1.725
If you do very hard exercise/sports & physical job or 2x training : Calorie-Calculation = BMR x 1.9
Ok, so that’s to work out how to maintain your current weight. There are apparently 3500 calories to a pound, so over the course of a week you might need to reduce your calorie intake by around 500 calories a day if you want to lose weight but there is a limit to how low you should go before you become counterproductive, and therefore lowering your metabolism (which you don’t want to do if you want to lose weight!).
There are also of course “safe” and “unsafe” ways to do this, so please seek the advice of an expert first. Starving yourself is NOT going to help you lose weight and keep it off, so it’s important your intake is appropriate for your body type and your goals!