I also round to the nearest hundred or 50 calories just to keep it simple. I pretty much just split the difference between my BMR & maintenance and try to hang there. Use this converter to convert to the unit accepted by the. It represents the amount that the individual could consume within a 24 hour period (one day) and still maintain his or her current weight. The Basal Metabolic Rate (BMR) Calculator estimates your basal metabolic ratethe amount of energy expended while at rest in a neutrally temperate environment, and in a post-absorptive state (meaning that the digestive system is inactive, which requires about 12 hours of fasting). I like that it shows you your BMR & maintenance calories in addition to the numbers based on your goals. Once those two fields are filled, the Katch Mcardle Basal Metabolic Rate Calculator can computer what the individual’s basal metabolic rate is. That said, I have been using the numbers from the Scooby Calculator with success. Whatevs.) And because the Eat to Perform calculator doesn't have 'sedentary' as an activity level option and I'm not sure what they're considering 'moderately active' those numbers feel a little high to me. (IIFYM gave me a slightly lower BMR than the others. I just Googled 'TDEE Calculator' & ran my numbers through the top 4 results and they are all pretty similar. Just pick one and go.adjust as per your real world results, not what some calculator says. All of these calculators use slightly different algorithms for activity levels.none of these calculators are gospel.nobody has a TDEE of exactly XXXX calories.your TDEE is actually a range of calories for which you could eat to maintain. Our diet calculator is the most accurate macro calculator there is, making tracking macros & IIFYM fat loss very easy.