Macro Calculator
Macro Calculator
Turn your calorie split into grams of macros.
How it works
A macro split describes the proportion of calorie energy assigned to protein, carbohydrate and fat. This calculator converts a split you choose into grams.
Using this calculator
Enter a calorie amount and choose protein and fat percentages. Carbohydrate automatically receives the remaining percentage. Protein plus fat cannot exceed 100%.
What to keep in mind
The default percentages are an editable example, not a personal nutrition prescription. Food-label calories can differ because of rounding, fibre, alcohol and other components.
Sources & further reading
FDA · Understanding the Nutrition Facts label ↗Frequently asked questions
Are my entries saved?
No. Calculator inputs remain in the current page and are cleared when you reload or leave. The tools do not upload your entries.
Why are results rounded?
The display is rounded for readability. Calculations use unrounded intermediate values. An estimate should not be interpreted as an exact measurement.