Calories burned are way off on MyFitnessPal?

13kathysue

People are telling me not to add exercise to my log because myfitnesspal gives way too much credit for calories for a particular exercise. I'd love to hear others' thoughts on this. So far I'm pretty much just logging food. But I'd really like to log exercise, too. Just not if it throws everything off. Thanks!

SL22268

Unfortunately they are right =/ I invested in a HRM to more accurately track calories burned and manually enter them. MFP and the machines themselves are saying I am burning almost double as to what my HRM tells me.

hthrld

Bump

piesbd

I have found that some of the calorie estimates are way off, so I tend to rely on my HRM to determine caloric burn....

However, I really try to not eat the calories that I burn, so I guess in the end it doesn't matter

DopeItUp

MFP has no way of knowing your intensity level or fitness level or anything like that, so it's just a guesstimate. For some people it's high and for others it's low (like me). HRMs aren't even 100% accurate either, but they're reasonably close.

miss_mckenna

Yes, the calories are off.

I no longer have a heart rate monitor, but I use this calculator: http://www.caloriesperhour.com/index_burn.php and it seems to be pretty accurate (compared with what I was burning when I had a HRM, and compared to my Nike+ calculations).

kritik

I have a heart rate monitor that I wear while exercising. I have found that MFP is off on some of the numbers, but is right on target for others. I really don't think that MFP is so far off that it wouldn't benefit you to log your exercise. If you are worried about the numbers being too far off, maybe try to get yourself a heart rate monitor.

k2quiere

There are many facets to this conversation. I found MFPs calculations to be way too high, but I have friends who have found them to be too low. You have to try it for yourself and see how it works with what YOUR body is doing. Either way, if you are working out and not logging and exercise, I hope you are exactly at your calorie goal or going a little over regularly, so you are at least eating back some of those calories.

LilMsRobbinHood

Even if the calories are way off on MFP, it's really nice keeping track of how hard (and how often) you work. You shouldn't really be eating back much of your exercise calories at all, so it shouldn't really throw anything off for you.

You can also use it to track how much more you can work out in x amount of time. When I first started working out at month ago, I could only do 20 minutes of the treadmill before giving up, and now 30 minutes at 3.4mph and 12% incline is an easy day for me. It's wonderful seeing the changes :-)

mgnmsn

I always cut my calories (or the time i did the activity) in half. they are way off. i still log, but i am much more conservative about it.

cramernh

The issue is that the calories that MFP reports for exercise tend to be either too low or too high.

The best way to have as close-to-accurate caloric burn readings is to invest in an HRM that will track your heart rate, caloric burn, etc.

I compared my exercises from MFP's numbers to the numbers my Polar FT4 read... and WOW what a difference! MFP's numbers were well over 250 calories more than what my HRM was reading. Im sticking by my HRM!!! lol!

mccrockl

Because I couldn't get myself to buy a HRM, I just started logging half of my workout so a 60 minute swim I put in as 30 minutes. It seems to do a good enough job of fixing the problem. Good luck! I definitely like logging the exercise. More calories to eat!

LLStover09

I highly recommend getting a heart rate monitor. The other thing is if you don't eat down your cals, it wont really matter. You can just use it as motivation!

ChelleDJM

Example - For 45 minutes on the elliptical -

MFP says 900+ cals burned
Elliptical at the gym says 700+
My hrm says 500ish

shellsrenee01

I have two different calorie estimators and they seem to match pretty closely with MFP. Then again, everyone is different and you get out what you put in. It can estimate all it wants but only I can determine how hard I work during any particular exercise. I say go with your HRM if you want a precise calculation.

Speaking of...I'm considering getting one. I want one WITHOUT a chest strap (as my chest is 50+ inches around and I don't think the belt would fit on me). Anyone have any good recommendations on a good HRM that does NOT have a chest strap?

Thanks! :bigsmile:

Jules2Be

you can enter your own calorie burn...you dont have to use the number that pops up.

LLStover09

I also would go w the cardio machines cal ct vs mfp

kateshape

I found the opposite. I invested in an HRM (polar ft7) and found I burn way more during certain exercises. Other one's were spot on, but walking in particular I was burning a lot more (but that could be due to the fact I selected the wrong mph)

kateshape

I have two different calorie estimators and they seem to match pretty closely with MFP. Then again, everyone is different and you get out what you put in. It can estimate all it wants but only I can determine how hard I work during any particular exercise. I say go with your HRM if you want a precise calculation.

Speaking of...I'm considering getting one. I want one WITHOUT a chest strap (as my chest is 50+ inches around and I don't think the belt would fit on me). Anyone have any good recommendations on a good HRM that does NOT have a chest strap?

Thanks! :bigsmile:

Can you get an HRM without a chest strap? I can't see it providing that much of an accurate reading just from your wrist heartbeat...

LindaCWy

I burn way more the MFP says I do, according to my HRM

k2quiere

I have two different calorie estimators and they seem to match pretty closely with MFP. Then again, everyone is different and you get out what you put in. It can estimate all it wants but only I can determine how hard I work during any particular exercise. I say go with your HRM if you want a precise calculation.

Speaking of...I'm considering getting one. I want one WITHOUT a chest strap (as my chest is 50+ inches around and I don't think the belt would fit on me). Anyone have any good recommendations on a good HRM that does NOT have a chest strap?

Thanks! :bigsmile:

The belts are very stretchy and extendable. Also, they like to fit tight to get an accurate reading, which I just found out when I hadn't tightened mine in a while and it was too loose to get my rate. I think if you check the STATS on Amazon, or the like, it will tell you how far they expand. I have a Polar 4, and it fits around my 40" with PLENTY of room to spare, since I just had to tighten it :-)

LLStover09

Most of the straps are adjustable. The package should say sizes it fits. You are probably already aware but without the continuous HR monitoring, your calorie count is going to be much less accurate..

WickedDeadly

I have the exact opposite problem. The MFP numbers are nearly 40% less than my HRM.

AlabasterJar68

There are many facets to this conversation. I found MFPs calculations to be way too high, but I have friends who have found them to be too low. You have to try it for yourself and see how it works with what YOUR body is doing. Either way, if you are working out and not logging and exercise, I hope you are exactly at your calorie goal or going a little over regularly, so you are at least eating back some of those calories.

Thank you. I have been doing this for a week now.

rmhand

My HRM give me a higher number than most machines and MFP.

jamm2000

I have found them to be off, but not significantly off. And I don't try to eat all of my exercise calories anyway so if it's off a few here and there, its no big deal. If I use a cardio machine that tracks, I'll enter those calories instead of what pops up on MFP.

ready2tryagain42

That is why I bought an HRM with a chest strap a year and a half ago.

jofjltncb6

If you don't believe the MFP calculation of calories burned (and you probably shouldn't), just override it. At least then you have a record of your activity in your log, which is an important aspect of keeping it.

kgprice11

Your Nike + statistics are also off because the Nike chip is just a generic pedometer with a Nike emblem on it, now if you are using you iphone to track with map your run (whatever the app is called) then you can evaluate your actual calorie burn compared to what your program says. All in all no program is 100% accurate therefore these programs just give you a guesstimate of the actual weight loss you have accomplished.

Good job to everyone and keep it up

susieq101178

After getting an HRM, I found that MFP was underestimating my burn.

Chameleone

I agree the calories are off BUT I don't think that is a reason not to log exercise. I lost 22 lbs logging both food and exercise without a HRM. That being said, I usually do not eat ALL my exercise calories back.
I just got a HRM about 2 weeks ago, and for me, I was burning more than MFP said I was, altho I hear that many others are burning less.
I would say get a HRM as soon as you can but I don't think your workouts should go unlogged just because you don't have one.