AI Nutrition Plan
Turning daily calorie targets into actual meals often breaks down at the grocery store. This AI Hub calculates your metabolic math programmatically, then builds a structured four-week meal rotation tailored to your cooking time, skill, and pantry access.
AI Hubs are included in plans that switch them on. The calculators stay free.
In short
An AI nutrition plan calculates your daily calorie and macro targets using hard clinical formulas—like Mifflin-St Jeor for BMR—and then constructs a four-week meal schedule. It balances your target protein (1.8g/kg), fats (28% of energy), and carbohydrates while enforcing recipe variety based on your actual cooking time and grocery access.
- You want a 4-week meal plan matching exact calorie and macro targets without calculating every recipe by hand.
- You struggle with meal monotony and need structured weekly variety without repeating the same main protein every night.
- You have strict time limits in the kitchen and need recipes matched to quick 15-minute prep windows.
- You are adjusting your body weight on a strict timeline and need clear weekly milestones.
How it works
How the Math and AI Work Together
Your energy expenditure relies strictly on deterministic code rather than AI guesses.
Step 1: Energy and Macro Formulas
- BMR (Mifflin-St Jeor):
- Male: 10 x weight (kg) + 6.25 x height (cm) - 5 x age (years) + 5
- Female: 10 x weight (kg) + 6.25 x height (cm) - 5 x age (years) - 161
- TDEE = BMR x activity multiplier (1.2 for sedentary up to 1.9 for extra active)
- Target Calories = TDEE - adjustment (for losing: 300, 500, 750, or 1000 kcal) OR TDEE + adjustment (for gaining: 200, 300, 400, or 500 kcal)
- Protein Target = 1.8 g x weight in kg
- Fat Target = (Target Calories x 0.28) / 9
- Carbohydrate Target = (Target Calories - (Protein x 4) - (Fat x 9)) / 4
- Water Target = 0.035 L x weight in kg (+ 0.5 L to 0.75 L if active)
- Weeks to Goal = weight difference / (adjustment x 7 / 7700)
Step 2: Recipe Engine Generation
Once the hard numbers are locked in, the AI Hub translates these targets into a day-by-day 4-week schedule. It creates seven unique breakfasts, lunches, and dinners per week based on your chosen prep time, meal frequency, and ingredient tier, ensuring varied protein sources across consecutive days.
Plan Limitations and Edge Cases
This system relies on standard population formulas (Mifflin-St Jeor and a fixed 1.8 g/kg protein multiplier). It is less precise for competitive bodybuilders requiring extreme protein target increases (2.2g+/kg) or individuals with severe metabolic conditions, such as unmanaged hypothyroidism.
If you have a history of eating disorders, rigid automated meal structures can trigger unhealthy behaviors. Additionally, pregnant or lactating women have elevated nutrient and calorie demands that standard BMR calculations do not address. Always consult a registered dietitian or physician for clinical nutritional therapy.
What it asks, and why
- Current Weight, Goal Weight, Height, Age, and Gender
- Enter precise current metrics to establish an accurate Mifflin-St Jeor BMR foundation; rounding weight off by 3-4 kg skews daily macro targets.
- Activity Level (1.2 to 1.9)
- Select 1.2 if you sit at a desk all day with minimal walking, even if you exercise 30 minutes; select 1.5+ only if you log 10,000+ steps alongside regular workouts.
- Weight Goal & Calorie Adjustment Preset
- For weight loss, choose the standard 500 kcal deficit (0.5 kg/week) for sustainability, or 750-1000 kcal for aggressive cuts; for gaining, 300 kcal minimizes excess fat gain.
- Meals Per Day & Preparation Limits
- Pick 'Quick' prep if you have under 20 minutes per meal, or 'Basic Pantry' if you want common grocery items without searching for specialty health store products.
- Dietary Restrictions & Exclusions
- List specific food dislikes or intolerances so the meal generator substitutes compliant protein and carb sources without breaking your macro distribution.
What you get
Pick a part to see what it is for and how to use it.
Metabolic & Macro Targets
Range: Daily Calories, Protein (g), Fat (g), Carbohydrates (g), Fluid (L), Weeks to GoalThe hard calculated numerical boundary your body needs to reach your target weight on schedule.
Log your actual intake daily for week 1 to ensure your home portion sizes line up with these target numbers.
Common mistakes
- Choosing an overly active multiplier (e.g., 1.75) because you hit the gym three times a week, which overestimates TDEE and stalls weight loss.
- Selecting a 1000 kcal deficit when you have only 3 kg to lose, leading to muscle loss and early fatigue.
- Weighing ingredients after cooking instead of raw, which alters water weight and causes off-target macro logging.
- Changing your goal weight or calorie settings mid-week without requesting an admin plan reset, causing disjointed weekly recipe schedules.
- Ignoring fluid intake targets (35 ml/kg plus activity add-ons), which causes water retention changes that obscure fat loss progress on the scale.
What to do next
Tick them off as you go.
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Frequently asked questions
Why does my plan show 1.8g of protein per kg instead of higher or lower ratios?
The math engine uses 1.8 g/kg body weight because peer-reviewed exercise science consistently identifies this range as effective for lean tissue preservation during deficits and muscle synthesis during surpluses. Higher amounts yield diminishing returns for non-elite athletes, while lower amounts increase muscle loss during cuts.
What should I do if I am too full to finish the assigned meals?
If you struggle to hit target volume, prioritize finishing the high-protein component of the meal first. You can also shift to lower-fiber carbohydrate sources or consume your allocated fats as dense options like olive oil or nut butter to meet energy goals without excessive volume.
Can I swap a Tuesday lunch recipe with a Thursday lunch recipe?
Yes, swapping same-type meals within the same week maintains your target macro averages because each meal is built around equivalent target proportions. Do not swap a dinner for a quick snack unless you adjust the remaining meals for that day.
Why did my estimated weeks to goal change when I selected a different deficit?
The timeline formula divides your total weight goal difference by your weekly fat loss target (daily adjustment multiplied by 7, divided by 7,700 kcal per kg of fat tissue). Increasing your deficit from 500 kcal to 750 kcal increases the weekly energy gap, shortening the timeline.
How do I update my meal plan if my body weight drops by 5 kg?
When your weight drops significantly, your BMR and TDEE decrease. You can submit a plan reset request through your dashboard; once an admin approves it, re-enter your new weight to generate updated calories, macros, and recipes.
What happens if I miss a meal or eat out off-plan?
Resume your scheduled plan with the next meal rather than skipping subsequent food to compensate. One off-plan meal has minimal effect on a 28-day energy balance, whereas drastic compensation triggers overeating cycles.
Why are my carbohydrates calculated last in the formula?
Protein (1.8g/kg) and fat (28% of total energy) are essential structural nutrients required for tissue repair and hormonal health. Carbohydrates supply performance fuel and fill the remaining caloric allowance based on your energy budget.
General wellness information, not medical advice. If you have a health condition or are worried about a result, talk to a doctor.