Macro Calculator
Last updated: July 2026
Convert a daily calorie target and macro percentages into grams of protein, carbohydrates and fat.
Protein target
—
- Carbohydrate target: —
- Fat target: —
- Total macro percentage: —
- Calories assigned: —
On this page
Quick summary: Convert a daily calorie target and macro percentages into grams of protein, carbohydrates and fat. Enter the requested values, calculate, review the result, and compare more than one realistic scenario before making a decision.
Read the complete guide
What this calculator estimates
Convert a daily calorie target and macro percentages into grams of protein, carbohydrates and fat. It is designed for fast planning and comparison in the United States. The output is an estimate, not a binding quote, approval, tax determination, insurance offer, legal conclusion, medical recommendation or professional advice.
How to use it
Enter the requested values using a single consistent time period and currency. Select Calculate, review the headline result and supporting figures, then change one assumption at a time to compare another scenario.
How the calculation works
Protein and carbohydrates are converted at four calories per gram and fat at nine calories per gram.
Important limitations
Macro targets are personal and can depend on medical conditions, training and professional guidance. Percentages do not have to total 100%, but a mismatch leaves calories unassigned or over-assigned.
Frequently asked questions
Is the result exact?
No. It is a planning estimate based on the assumptions entered.
Can I compare different scenarios?
Yes. Change one input at a time so you can see which assumption changes the result.
Does the calculator store my inputs?
The calculation runs in the browser and does not require an account. Avoid entering unnecessary confidential information.