Energy Needs Calculators
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BMR Calculator
Resting metabolic rate from three different equations, with the spread between them — because every one of them is a population regression,…
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Calorie Calculator
Daily calories for a goal, with the plateau built in — because the 3,500-calorie rule draws a straight line and weight loss…
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Calorie Deficit Calculator
Work backwards from a target weight and a date to the intake that actually reaches it — and find out when the…
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How Many Calories Do You Need a Day?
Work out your daily calorie needs step by step: BMR with the Mifflin–St Jeor equation, your activity level, and a safe target…
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TDEE Calculator
Daily calorie burn, and which half of the estimate carries the error — the activity guess is worth several times more than…
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Weight Loss Timeline Calculator
How long to reach a goal weight at a given calorie deficit, simulated week by week as your energy needs fall —…