Macro Calculator
Once you know your daily calories, macros tell you how to split them between protein, carbohydrate, and fat. Getting enough protein in particular helps support training and recovery. Enter your daily calories and pick a goal, and this tool gives a simple gram breakdown. It is a general starting point, not a fixed prescription.
| Macro | Grams | Calories |
|---|---|---|
| Protein | ||
| Carbohydrate | ||
| Fat |
How This Works
The tool splits your calories into the three macros based on your goal, then converts each into grams. Protein and carbohydrate provide about four calories per gram and fat about nine, so the tool uses those values to work out the grams. Fat-loss splits lean higher in protein, while muscle-gain splits allow more carbohydrate for training energy.
Understanding Your Result
The grams column is your daily target for each macro. Protein supports muscle repair, carbohydrate fuels training, and fat supports general health. These are starting points, adjust to your preferences, how you feel, and how your body responds over time.
Important Limitations
Macro needs vary between people and goals, and this tool uses general splits rather than a personal plan. It does not account for medical conditions or specific dietary needs. Use it as a guide and seek personal advice from a qualified professional where needed.
Scientific Basis
Macronutrient ranges follow general dietary guidance. See the NIH PMC review on energy needs for background on how calorie needs are estimated.
Related Reading
For more on fueling your training, see my nutrition articles and my guide on building and keeping muscle as you age.