Looking for a Greg Nuckols calorie calculator?
If you follow Greg Nuckols and want to know how many calories to eat each day, start with maintenance calories: total daily energy expenditure (TDEE). Eat around that amount to maintain weight, below it to lose weight, or above it to gain weight. The useful test of a starting estimate is how your weight trend responds to your recorded intake over time.
Greg Nuckols is part of the team behind MacroFactor. MacroFactor Nutrition is the paid app associated with him for food logging, expenditure estimates, and coached calorie targets. This is an independent guide; MacroCodex is not affiliated with or endorsed by Greg Nuckols or MacroFactor and does not use MacroFactor's algorithm.
Our claim: See measurable weight gain or weight loss results within 2–3 weeks of using MacroCodex. Many users start seeing results as early as the first week.
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Calculate a daily calorie target for free
- Open MacroCodex and enter your details to get an initial maintenance-calorie estimate.
- Choose whether you want to maintain, lose, or gain weight. The app turns your maintenance estimate into a daily calorie target for that goal.
- Record your calorie intake and body weight consistently. MacroCodex updates its maintenance estimate and targets as it learns from your trend.
An adaptive estimate is different from a one-time activity multiplier. Your usual routine may not match a calculator's activity category, and it can change during a diet. Consistent intake and weight records help an adaptive app refine its estimate without requiring you to guess a new activity multiplier after every change in routine.
MacroCodex is free and has no ads or subscription. It asks you to enter daily calorie totals; if you want a food diary, you can use a separate logger such as CalorieCodex. Use a trend across weeks rather than reacting to a single weigh-in.
Want the details behind the estimate? See how adaptive TDEE works. For MacroFactor's subscription and a free-app comparison, see MacroFactor pricing and our MacroFactor alternative guide.