Calculator Form
Example Data Table
| Scenario | Weight | Activity | Low Days | Refeed Days | Main Use |
|---|---|---|---|---|---|
| Fat loss phase | 82 kg | 1.55 | 5 | 2 | Reduce calories while keeping protein high. |
| Strength maintenance | 90 kg | 1.725 | 5 | 2 | Hold performance with planned carbohydrate refeeds. |
| Lean gain phase | 76 kg | 1.55 | 4 | 3 | Add calories carefully while monitoring body composition. |
Formula Used
BMR for men: 10 × weight kg + 6.25 × height cm - 5 × age + 5
BMR for women: 10 × weight kg + 6.25 × height cm - 5 × age - 161
TDEE: BMR × activity multiplier
Target calories: TDEE × (1 + calorie adjustment ÷ 100)
Protein grams: selected weight basis × protein grams per kg
Low day fat grams: remaining calories after protein and carbs ÷ 9
Refeed macros: refeed calories × macro percentage ÷ calories per gram
Weekly average: total low day and refeed day values ÷ 7
How To Use This Calculator
- Choose metric or imperial units.
- Enter age, sex, weight, height, and body fat percentage.
- Select an activity multiplier that matches your weekly movement.
- Set your calorie adjustment for loss, maintenance, or gain.
- Choose whether protein uses total body weight or lean mass.
- Enter low carb day carbs and weekly day split.
- Set refeed percentages so they total 100.
- Submit the form and review the result above the form.
- Download the CSV or PDF for tracking and comparison.
Advanced Anabolic Diet Macro Planning
An anabolic diet macro plan uses two different fuel periods. Low carb days push the body toward fat use. Refeed days restore glycogen and support hard training. This calculator turns that structure into practical numbers.
The first step is energy control. A surplus supports muscle gain. A deficit supports fat loss. Maintenance helps body recomposition. The calculator estimates basal metabolic rate, adjusts for activity, then applies your selected calorie change.
Protein is set from body weight or lean mass. Lean mass can be useful when body fat is known. Higher protein supports satiety and recovery. It also protects muscle during a calorie deficit.
Low carb days are usually high in fat. Fat supplies the remaining calories after protein and carbohydrate are counted. This method keeps the plan flexible. You can test different carb limits without rebuilding the whole diet.
Refeed days work differently. Carbohydrate rises and fat usually falls. This supports training performance and can make the weekly plan easier to follow. The calculator separates low days from refeed days, then shows the weekly average.
Use the output as a planning estimate. Real results depend on food quality, sleep, training volume, steps, stress, and adherence. Track body weight trends for two to four weeks. Then adjust calories by small amounts.
For health, choose whole foods often. Include lean protein, eggs, fish, olive oil, nuts, vegetables, and fiber. During refeeds, choose rice, potatoes, oats, fruit, and other digestible carbohydrate sources. Keep hydration steady.
This tool is not medical advice. People with diabetes, kidney disease, eating disorders, pregnancy, or other medical conditions should speak with a qualified professional before starting a strict diet phase.
The best macro target is the one you can repeat. Start with realistic numbers. Review energy, hunger, digestion, gym strength, and mood. A strong plan should improve decisions, not create confusion.
For advanced use, compare several scenarios. Change activity, carb limits, protein targets, and refeed ratios. Save each result as a file. Review them beside your training log. This makes progress easier to audit. It also helps you avoid emotional diet changes after one difficult workout or one high scale reading. Use trends first, then adjust with patience and clear records each month.
FAQs
What is an anabolic diet macro calculator?
It estimates calories, protein, fat, and carbohydrates for low carb days and refeed days. It helps turn a structured diet idea into daily numbers.
Is this calculator medical advice?
No. It is a planning tool only. Speak with a qualified health professional before starting a strict diet, especially with medical conditions.
Why are low carb days higher in fat?
After protein and carbohydrates are set, fat fills the remaining calories. This supports energy intake when carbohydrate intake is intentionally low.
Why does the calculator include refeed days?
Refeed days raise carbohydrate intake. They can help refill glycogen, support training performance, and make the weekly plan easier to maintain.
Should protein use body weight or lean mass?
Lean mass is useful when body fat is known. Total body weight is simpler. Both methods are estimates, so track results and adjust.
How often should I update my macros?
Review progress every two to four weeks. Adjust calories or carbs if weight, performance, hunger, or adherence is not matching the goal.
Can I use this during muscle gain?
Yes. Use a positive calorie adjustment and monitor body composition. Increase calories slowly to reduce unnecessary fat gain.
Why must refeed percentages total 100?
The calculator divides refeed calories across protein, fat, and carbohydrates. The percentages must total 100 to create a complete macro split.