Calculate your macros
Use presets for speed, or switch to custom methods for protein, fat, and carbs.
Example data table
| Scenario | Calories | Protein % | Fat % | Carb % | Protein g | Fat g | Carb g |
|---|---|---|---|---|---|---|---|
| Balanced maintenance | 2200 | 30% | 25% | 45% | 165 | 61.1 | 247.5 |
| High-protein cut | 1800 | 35% | 25% | 40% | 157.5 | 50 | 180 |
| Lower-carb plan | 2400 | 35% | 35% | 30% | 210 | 93.3 | 180 |
These examples illustrate how daily calories convert into grams using standard macro calorie values.
Formula used
Core calorie values
- Protein calories = protein grams × 4
- Carbohydrate calories = carb grams × 4
- Fat calories = fat grams × 9
Percentage method
Macro grams = (total calories × selected percentage) ÷ calories per gram
Example: Protein grams = (2200 × 30%) ÷ 4 = 165 g
Weight-based method
Macro grams = body weight × chosen grams per kg or grams per lb
This method is often used for protein and minimum fat targets.
Remainder carbs method
Carb calories = total calories − protein calories − fat calories
Carb grams = carb calories ÷ 4
How to use this calculator
- Enter your daily calorie target.
- Add your body weight and choose kg or lb.
- Pick a preset for fast planning, or use custom methods.
- Choose how protein, fat, and carbs should be calculated.
- Set meals per day to see per-meal macro splits.
- Click Calculate Macros to show results above the form.
- Review the table, meal breakdown, and chart.
- Download the results as CSV or PDF when needed.
Frequently asked questions
1. What does a calorie to macro calculator do?
It converts a daily calorie target into grams of protein, fat, and carbohydrates. The split can be based on percentages, body weight rules, fixed grams, or leftover calories.
2. Which macro method is best for beginners?
A balanced percentage split is often the easiest starting point. It gives clear targets without needing advanced nutrition knowledge, then you can refine protein or fat using body-weight methods later.
3. Why are protein and carbs four calories per gram?
Standard nutrition labeling uses average energy values of four calories per gram for protein, four for carbohydrates, and nine for fat. These values keep macro planning simple and consistent.
4. When should I use grams per kilogram?
Use grams per kilogram when you want body-size-based targets, especially for protein. It works well for athletes, cutting phases, lean mass support, and structured meal planning.
5. What does remainder carbs mean?
Remainder carbs fill whatever calories are left after protein and fat are set. This is useful when protein and fat are priority targets and carbs need to flex around them.
6. Does fiber count toward calories here?
Fiber is shown as a guidance target only in this calculator. The main macro totals use the standard calorie values for protein, carbs, and fat to keep comparisons straightforward.
7. Why might my custom settings show an error?
If protein, fat, and carb calories add up to more than your total calorie target, the calculator stops and asks for lower values. The plan must fit within daily calories.
8. Can I use this for bulking, cutting, or maintenance?
Yes. Change the daily calorie target and choose a suitable macro split. Higher protein often supports cutting, while maintenance and bulking can use broader carb ranges.