Calorie accuracy

hamelle2
hamelle2 Posts: 297 Member
edited November 23 in Health and Weight Loss
Do you trust the calorie info listed on packaged and fast food websites?
Example: Boston market frozen oven roasted chicken....1 package 290 calories (397 gms)
Would you cook it and then weigh it or just log 290 cals?

Replies

  • hamelle2
    hamelle2 Posts: 297 Member
    Experimenting right now. Be back in 8 minutes...lol
  • PinkPixiexox
    PinkPixiexox Posts: 4,142 Member
    I've found that on the packs of chicken I buy it lists the cooked weight :)

    I tend to just barcode scan a lot of these packaged products and stick with the number given. I imagine they aren't always 100% accurate but short of hunting down the factory where it's processed and begging the production staff for every morsel of information, it's the closest I'm gonna' get.

    I've still lost 30lbs doing it this way so they can't be that far out!
  • DemoraFairy
    DemoraFairy Posts: 1,806 Member
    edited September 2015
    Calories on packages are usually minimums, so unless you're eating something that will pretty much always be the same weight (like a chocolate bar), it'll probably be a few more calories than listed. For most of my diet I just went by what's on the packet. Now, if it's something that's easy to weigh I'll weigh it, if not (if it's a oven meal or something) I'll just go by what's on the packet.
  • KateTii
    KateTii Posts: 886 Member
    Most prepackaged single serve foods are consistent with labelling. In most countries they can't be too much higher or lower than the listed weight.

    It comes down to convenience for me... I will just eat the single serve frozen lasagna and log what the box says but i'll weigh my frozen fish portions before baking.
  • hamelle2
    hamelle2 Posts: 297 Member
    The results of my weighing-
    Cooked package in its container-400 gms
    Just the food-340 gms
    Box listed 397 gms
    Ideas?
  • hamelle2
    hamelle2 Posts: 297 Member
    Thanks. I learned here on MFP that weighing is important for success! Maybe I need to relax a bit.
  • RuNaRoUnDaFiEld
    RuNaRoUnDaFiEld Posts: 5,864 Member
    I weighed a 500g pack of cauliflower florets last night and it weighed 532g
  • HM2206
    HM2206 Posts: 174 Member
    I usually trust it, but I try to leave a little wiggle room. I make most of my diet natural foods anyway, and there is not much variation in the calories in "raw carrot"...

    Recently there was a producer of yogurt (here in Norway) who made a statement that they unfortunately put the wrong numbers on the label, and the calories where much higher. So yes, they make mistakes...
  • dammitjanet0161
    dammitjanet0161 Posts: 319 Member
    I think it's generally accepted here that the weights and calorie info on packaged foods can be a bit off so a lot of people recommend weighing everything.

    However... I also recently saw an experiment as part of a BBC documentary where scientists accurately weighed and calorie counted a wide sample of pre-packaged foods and ready meals. Many of the packages were over the amounts listed on the label, but plenty were under too, so the conclusion was that it pretty much balances out over time. So I think that if you want to be absolutely spot-on weigh everything, but personally I wouldn't stress too much.
  • mewilliams11
    mewilliams11 Posts: 139 Member
    I may become a little more strict as my weight loss slows or I hit a plateau, but for me personally I don't worry about the difference between what a package says & the actual weight. As others have stated, the manufacturers of the food have to be fairly accurate. I overestimate my food calories often so I figure it makes up for the few calories that pretty packaged foods may be off.

    I can't worry about making sure every single thing I log is 100% accurate or I'd go crazy!
  • Florida_Superstar
    Florida_Superstar Posts: 194 Member
    Hey there, definitely do weigh your food becuase it IS important for success, and without it it's very easy to underestimate how much you're eating. I still weigh everything even after years of maintaining. I generally eat fresh foods that I prepare, but on occasion when I do eat prepackaged foods, I just use what the package says. I don't think being slightly off will matter much if you only eat those foods now and then. If you eat them a lot and your weight seems to be inconsistent with your calorie intake, you may need to inflate the calories for your prepackaged foods to get accurate totals. Good luck!!
  • hamelle2
    hamelle2 Posts: 297 Member
    Do you know if the grams listed on packages are just the food?
    I eat a lot of frozen Tyson chicken. The Label Says 4 oz= 110 calories. But it doesn't say if it's 4 oz of frozen or 4oz of cooked. That can be a big difference. Which is it please??
    * I really am not a nut! *
  • hamelle2
    hamelle2 Posts: 297 Member
    I weighed a 500g pack of cauliflower florets last night and it weighed 532g

    See! What if that was a bag of almonds? :)
  • 3dogsrunning
    3dogsrunning Posts: 27,167 Member
    hamelle2 wrote: »
    I weighed a 500g pack of cauliflower florets last night and it weighed 532g

    See! What if that was a bag of almonds? :)

    Are you going to eat 500 grams of almonds?

    A serving package of almonds would be much smaller. If it was over in weight it would be by a lot less. 32 grams is more than a serving typically.
  • PinkPixiexox
    PinkPixiexox Posts: 4,142 Member
    There was someone on here recently that berated me for not weighing my banana before I ate it.
    This, in my opinion, was crazy behaviour. I am genuinely treating this as a lifestyle change, so weighing a BANANA just seemed absolutely ridiculous and abnormal. I used my common sense - LOOKED at said banana, decided it was medium in size and calculated it at 110 calories. Job done.

    There are other things that should certainly be weighed - Cereal is a good one! Meat, pasta, rice etc etc. Common sense on the weighing! But I'm not whipping out the scales to weigh my banana!!! :neutral:
  • DemoraFairy
    DemoraFairy Posts: 1,806 Member
    edited September 2015
    There was someone on here recently that berated me for not weighing my banana before I ate it.
    This, in my opinion, was crazy behaviour. I am genuinely treating this as a lifestyle change, so weighing a BANANA just seemed absolutely ridiculous and abnormal. I used my common sense - LOOKED at said banana, decided it was medium in size and calculated it at 110 calories. Job done.

    There are other things that should certainly be weighed - Cereal is a good one! Meat, pasta, rice etc etc. Common sense on the weighing! But I'm not whipping out the scales to weigh my banana!!! :neutral:

    Bananas are usually the things that are specifically recommended to weigh, since they're so calorie dense for a fruit... I always weigh my bananas.
  • hamelle2
    hamelle2 Posts: 297 Member
    hamelle2 wrote: »
    I weighed a 500g pack of cauliflower florets last night and it weighed 532g

    See! What if that was a bag of almonds? :)

    Are you going to eat 500 grams of almonds?

    A serving package of almonds would be much smaller. If it was over in weight it would be by a lot less. 32 grams is more than a serving typically.

    I was just joking.
  • RuNaRoUnDaFiEld
    RuNaRoUnDaFiEld Posts: 5,864 Member
    There was someone on here recently that berated me for not weighing my banana before I ate it.
    This, in my opinion, was crazy behaviour. I am genuinely treating this as a lifestyle change, so weighing a BANANA just seemed absolutely ridiculous and abnormal. I used my common sense - LOOKED at said banana, decided it was medium in size and calculated it at 110 calories. Job done.

    There are other things that should certainly be weighed - Cereal is a good one! Meat, pasta, rice etc etc. Common sense on the weighing! But I'm not whipping out the scales to weigh my banana!!! :neutral:

    My staff laugh at me as I bring the banana peel home to re-weigh it. And apple cores and chicken bones. It's each to their own :)
  • PinkPixiexox
    PinkPixiexox Posts: 4,142 Member
    I just can't imagine myself weighing my bananas in the long-term!
    With the bananas, I always 'over estimate' as opposed to under. There are all sorts of different results when you search it on the database - ranging from around 70 - 110 (which is what I log as it's the highest and I'm less likely to go over).
  • DemoraFairy
    DemoraFairy Posts: 1,806 Member
    I just can't imagine myself weighing my bananas in the long-term!
    With the bananas, I always 'over estimate' as opposed to under. There are all sorts of different results when you search it on the database - ranging from around 70 - 110 (which is what I log as it's the highest and I'm less likely to go over).

    Of course, I'm not going to weigh bananas for the rest of my life - but I'm also not going to eat 1200 calories a day for the rest of my life. Some aspects of dieting are temporary. Once you're maintaining you can probably get away with not weighing bananas, if you're trying to lose weight you might need that extra bit of accuracy.

    'Over estimating' would never work for me as I've never had any idea what people think of as being small, medium or large. I wouldn't say that the eggs I eat for breakfast each day are particularly large, I'd think of them just as normal sized eggs, but they're always 20-30 calories more than a 'large' egg in the database.
  • Marilyn0924
    Marilyn0924 Posts: 797 Member
    From what I have gleaned over the years, the packaged weight is based on uncooked product.
    I always weigh pre-cooking, if it ends up being a bit less after I've charred the crap out of it, goody for me!
  • DeguelloTex
    DeguelloTex Posts: 6,652 Member
    From what I have gleaned over the years, the packaged weight is based on uncooked product.
    I always weigh pre-cooking, if it ends up being a bit less after I've charred the crap out of it, goody for me!
    It ends up weighing less because water/liquid cooks off. It's not going to contain meaningfully fewer calories just because it weighs less. It's just going to be more calorie dense than when it's uncooked.

  • PinkPixiexox
    PinkPixiexox Posts: 4,142 Member
    I just can't imagine myself weighing my bananas in the long-term!
    With the bananas, I always 'over estimate' as opposed to under. There are all sorts of different results when you search it on the database - ranging from around 70 - 110 (which is what I log as it's the highest and I'm less likely to go over).

    Of course, I'm not going to weigh bananas for the rest of my life - but I'm also not going to eat 1200 calories a day for the rest of my life. Some aspects of dieting are temporary. Once you're maintaining you can probably get away with not weighing bananas, if you're trying to lose weight you might need that extra bit of accuracy.

    'Over estimating' would never work for me as I've never had any idea what people think of as being small, medium or large. I wouldn't say that the eggs I eat for breakfast each day are particularly large, I'd think of them just as normal sized eggs, but they're always 20-30 calories more than a 'large' egg in the database.

    Good points - definitely noted :)
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