I really wouldn't sweat it too much. If you want to track calories (some don't) I'd go with the keto calculator with the option to lower a bit if you find the weight isn't moving. IMO, if you can lose weight at a higher number of calories, its probably better for your metabolism...but I have no basis in science for that one except that those times when I've lowered calories too long for a long period of time (high stress, didn't eat) I ended up plateaued for a month when I went back to my normal level of 1420.

I go by the Keto calculator but I'm still surprised that the numbers are so off...
Did you enter the same activity level and desired weekly loss rate? Not that it means that's what you'll lose of course, but it's used in the calculation.
Keto calculator did give me more calories too though. But only by about 100, actually less I think.

Make sure your activity levels are set to the same. If you tell MFP that you're sedentary, but you tell the Keto calculator that you're lightly active, the number will be different. Also, the Keto calculator lets you set your deficit. If you're using the .5lb/week, then you want KC to use a 250 calorie deficit. If you're using the 1lb/week setting, then you want a 500 calorie deficit.

I usually just use sedentary and a 500 calorie deficit, and let MFP increase the calories as needed, though I have more calories to toy with.

That said, it doesn't much matter which one you start with. You'll likely be adjusting in a month or so, anyway. Just pick one, try it for a month, and see where you're at. Remember, a good weight loss speed it .5-1lb per week, so don't freak out if you didn't lose something like 10 pounds in the month. As long as you lose somewhere around 4 pounds in a month, you're doing well.

TheCakeDiva wrote: »

Sunny_Bunny_ wrote: »

I go by the Keto calculator but I'm still surprised that the numbers are so off...
Did you enter the same activity level and desired weekly loss rate? Not that it means that's what you'll lose of course, but it's used in the calculation.
Keto calculator did give me more calories too though. But only by about 100, actually less I think.

Yes - I've used the same info on both sites. That's why I assumed Kcal and calories were two different things!

I've decided to split the middle for now and see where that takes me.

Good plan! It's something you'll always be tinkering with anyway.

IIRC the keto calculator put me a little higher than MFP, too, but not by much.
I did lose faster than either predicted based on the size of my deficit, though that's slowed down this month. (I lost about 7-8 lbs each in Nov and Dec and have lost close to 4 in January, which is still good, as @Dragonwolf pointed out.)

I'm definitely losing faster than I have at this calorie level with different macros, too. With a higher carb level, I have trouble losing even at 1200 calories; I've been at 1350 for most of my keto time. I go a bit over some days and under other days depending on hunger level but it averages out. (I'm a 5'7" female but I have PCOS which can lead to a slower metabolism.)

I reset my calories a few days ago as a test ... MFP gave me 1300, and I could not stick to that! the Keto Calculator gives me 1575 or so, more to my liking I have turned on the negative adjustments with my fitbit, so will get warnings when tempted to overconsume. I should be able to stick with it now.