FitBit vs MFP descrepencies

Depending on what value you're looking at in your Fitbit, you might not be viewing just your exercise. What are you logging here to get 143?

Hmm...I have a fitbit one and I think it's fairly accurate. MFP usually adds about 1000 calories from exercise each day from my fitbit (700 cals burned in 1 hr on the elliptical, the rest come from 3 dog walks - 3 walks with 2 dogs, not walks with three dogs lol)

I've been using a Fitbit One for almost 2 years now and am pretty confidant in the calories burned estimation (just over time seeing what it has me burning and relating that to calories that I eat and compared to the TDEE calculator on IIFYM). Over time Fitbit should be able to anticipate your daily burn based on your history.

Do you have your Fitbit and MFP linked? I do and then when I use my HRM and the digifit app I have that feed only to Fitbit so that all my exercise is coming into MFP from Fitbit. There is a Fitbit users group here on MFP, they may have better answers. Happy logging! :happy:

I have a Fitbit One, not a Zip, but in general Fitbits keep a <b>running total of your calories<b> for the day. So that number you get from the Fitbit is (everything you've already burned) + (your walk) where the MFP estimate is just your walk. It isn't a discrepancy so much as the way the two systems work. For example my Fitbit dashboard tells me I have 666 calories left to eat for the day as of right now because I haven't done all that much yet, where MFP tells me I have 1275 left as of right now because it assumes I'm going to do at least so much. As the day goes on the two numbers get closer together and by the end of the day the two are generally in sync within 50 - 100 calories.

I tend not to log exercises that the Fitbit tracks well (walking, running) because I have the two accounts linked and they sort it out via the "Fitbit Adjustment" you see pop up on your diary.

In that case you aren't comparing the same data. If you add an hour of walking to MFP you're only adding exercise as it is on top of your sedentary allowance MFP gives you. The hour of burn on FitBit includes what you'd have burned if you'd done nothing at all. You'll notice you've already got a few hundred calories of burn when you wake up in the morning.

My question is though... why are you logging your C25K to MFP at all when you can sync your FitBit and MFP accounts so that it'll adjust your activity levels/calories for you automatically?

This is going to vary for some people.
I found that in general the two tend to be close for walk based activities.
I personally wear a HRM while running as my burn tends to be lower than what MFP calculates
I don't log daily things like walking, etc as Fitbit sends over your step data to MFP.
Be sure to enable neg calories, I found that I was eating a bit too much before I did this and things have leveled out.

Also make sure you're set to the same activity level between the two as this can cause some variances.
But as most have said it'll even out and at the end of the night you should maybe have a 100-200 cal difference between the two.

Good Luck!

Is your Fitbit giving you those distances or do you have something more accurate? Fitbit does ok if you set your stride length settings or if you fit the default formula well.

The first week of C25k only has a few minutes of running and the workouts are around 35 minutes, so you must be walking at 4+ mph, if the distance is accurate and you're only doing the 35 minutes. In 100 degree heat with hills, too. Impressive!