### Estimated Calorie Requirements Overestimates Calorie

Posted:

**Mon Apr 30, 2012 2:06 am**Hi all

I was trying to estimate my calorie requirements using the Estimated Calorie Requirements Calculator on the website

But it seems to me that the calculator grossly overestimates calories

In fact at 150 pounds with 8 hours of sleep, 15 hours of very light activity and just one hour of moderate activity I got a total

of calories burned over BMR of 780 calories. That's a lot of calories for so little activity.

I then tested how much I would burn with 8 hours of sleep and 16 hours of very light activity, which would be "sedentary living"

That's still 541 calories burned.

To have a confirmation that was too much I tried calculating a sedentary day with the Harris-Benedict Formula

So sedentary (just like 8 hours of sleep and 16 hours of very light activity) is BMR x 1.2

My BMR is 1622. 1622 x 1.2 is 1946 calorie. If I substract my BMR I get 324 calories

Mind you, several studies have found that Harris-Benedict Formula overestimates calories by 10%

So living a sedentary life a 150 pound guy would burn 295-324 calories on top of his BMR

Seems very little but this is exactly why sedentary living is so bad.

After all it has been said many time that for an average person doing some moderate activity during the day,

the BMR is going to be the 80% of all calories burned. So activity is always more or less 20% of total calories, more often less than more.

So the calculator says that for a 150 lbs guy 1 hour of very light activity (eating, computer, talking on the phone, reading) burns 34

extra calories. But actually it's closer to 20 calories. The difference might seem little but it adds up quickly and for someone on a cut that could reset all

his calorie decifit resulting in no fat loss.

Someone 150 lbs might calculate his daily energy requirement as 2400 calories

Try to substract 500 calories for a total of 1900 calories and he should lose 1 lbs a week

But instead his daily energy requirement is 2100 calories and his calorie deficit is just 200 in truth.

He is now losing a pound every 3 weeks and practically seeing no results and giving up.

The caloric calculator is a great tool but I think the exaggerated values need to be fixed.

What do you think?

I was trying to estimate my calorie requirements using the Estimated Calorie Requirements Calculator on the website

But it seems to me that the calculator grossly overestimates calories

In fact at 150 pounds with 8 hours of sleep, 15 hours of very light activity and just one hour of moderate activity I got a total

of calories burned over BMR of 780 calories. That's a lot of calories for so little activity.

I then tested how much I would burn with 8 hours of sleep and 16 hours of very light activity, which would be "sedentary living"

That's still 541 calories burned.

To have a confirmation that was too much I tried calculating a sedentary day with the Harris-Benedict Formula

So sedentary (just like 8 hours of sleep and 16 hours of very light activity) is BMR x 1.2

My BMR is 1622. 1622 x 1.2 is 1946 calorie. If I substract my BMR I get 324 calories

Mind you, several studies have found that Harris-Benedict Formula overestimates calories by 10%

So living a sedentary life a 150 pound guy would burn 295-324 calories on top of his BMR

Seems very little but this is exactly why sedentary living is so bad.

After all it has been said many time that for an average person doing some moderate activity during the day,

the BMR is going to be the 80% of all calories burned. So activity is always more or less 20% of total calories, more often less than more.

So the calculator says that for a 150 lbs guy 1 hour of very light activity (eating, computer, talking on the phone, reading) burns 34

extra calories. But actually it's closer to 20 calories. The difference might seem little but it adds up quickly and for someone on a cut that could reset all

his calorie decifit resulting in no fat loss.

Someone 150 lbs might calculate his daily energy requirement as 2400 calories

Try to substract 500 calories for a total of 1900 calories and he should lose 1 lbs a week

But instead his daily energy requirement is 2100 calories and his calorie deficit is just 200 in truth.

He is now losing a pound every 3 weeks and practically seeing no results and giving up.

The caloric calculator is a great tool but I think the exaggerated values need to be fixed.

What do you think?