NoNoiseTools

Health & Fitness calculators

Macro Calculator

Use this macro calculator to convert a calorie target into grams of carbohydrate, protein and fat. The calculator follows the split you choose and does not recommend a diet.

Calorie and macro split

Calorie and macro split

Convert a calorie target into grams using the preset or custom split you choose.

kcal/day

Supported range: 500 to 10000 kcal/day.

Presets are examples, not recommendations.

Result updated. Estimated macro grams: 138 g/day protein.

Result summary

Macro grams

Main health estimate from the values entered.

Balanced example

138 g/day protein

275 g/day carbohydrate and 61 g/day fat at 2,200 kcal/day.

Key numbers

Carbohydrate
275 g/day

50% of calories.

Fat
61 g/day

25% of calories.

Split total
100%

Balanced example

General estimate notice

This tool provides a general estimate only and converts a user-selected calorie split. It is not medical advice, not a diagnosis and not a substitute for a qualified health professional. Do not use it for emergency decisions. It is not medical nutrition therapy or a diet recommendation.

Key takeaway

At 2,200 kcal/day with a Balanced example split, the estimate is about 138 g/day protein, 275 g/day carbohydrate and 61 g/day fat.

Protein
138 g/day

25% of calories.

Carbohydrate
275 g/day

50% of calories.

Fat
61 g/day

25% of calories.

Split total
100%

Balanced example

Calories by macro

Protein calories
550 kcal/day
Carbohydrate calories
1,100 kcal/day
Fat calories
550 kcal/day

Notes to keep in mind

  • This calculator follows the split you enter. It does not recommend a diet.
  • Macro needs vary by person and context.
  • This tool is not suitable for eating disorder contexts or medical nutrition therapy.

Copy this macro estimate

Copy a plain-English summary with calorie target, split and macro grams.

Exports are generated in your browser. NoNoiseTools does not need to store your numbers or require an account.

Formula used

Protein and carbohydrate use 4 kcal per gram. Fat uses 9 kcal per gram. The calculator multiplies calories by the selected percentage, then divides by the calories per gram.

How this macro calculator works

The calculator multiplies the calorie target by the selected percentage for each macro, then converts those calories into estimated grams.

Calories per gram

Protein and carbohydrate use 4 kcal per gram. Fat uses 9 kcal per gram. These conversion factors are used only to translate the split you enter into grams.

Preset and custom macro splits

Presets are examples for quick math. Custom percentages must be finite, non-negative and add up to 100%. AMDR context, when shown, is a general adult reference and not personal nutrition advice.

What this tool does not include

This calculator does not prescribe diets, recommend weight loss, create meal plans, diagnose nutrition needs or provide medical nutrition therapy. It is not designed for eating disorder contexts, pregnancy, children or teens, or medical conditions unless reviewed with a qualified professional.

Key terms and assumptionsFormula notes, key terms, source assumptions and limits used in this calculator.
Calories per gram
Protein and carbohydrate use 4 kcal per gram. Fat uses 9 kcal per gram.
Split total
Custom protein, carbohydrate and fat percentages must add up to 100%. Blank custom percentages are invalid, not zero.
Preset splits
Preset macro splits are examples for quick calculation and are not diet recommendations.
No diet advice
This calculator converts a user-selected split. It does not prescribe diets, weight loss, meal plans or medical nutrition therapy.

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FAQs

What are macros?

Macros are macronutrients that provide calories: carbohydrate, protein and fat.

How does this calculator convert calories to grams?

It multiplies calories by the selected percentage, then divides by 4 kcal/g for protein and carbohydrate or 9 kcal/g for fat.

Do the percentages need to add to 100?

Yes. Protein, carbohydrate and fat percentages must total 100%.

Does this calculator recommend a diet?

No. It follows the split you choose and does not prescribe a diet.

Can I use a custom macro split?

Yes, if the custom percentages are finite, non-negative and add to 100%.

What if one macro is set to 0%?

The calculator can show 0 g for that macro if the full split still totals 100%, but it does not describe that as recommended.

Are AMDR ranges personal recommendations?

No. If shown, they are general adult reference ranges, not personal nutrition advice.

Can I copy the result?

Yes. The copy summary includes the calorie target, split and macro grams.