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Carbohydrate Calculator

Calculate the broad adult carbohydrate range corresponding to 45–65% of energy.

ResultReference range: 248–358 g/day

This general adult range is not a personalized nutrition prescription.

How to use this calculator

  1. Enter a daily calorie amount.
  2. Review the live result and use Copy result when you need to share it.

How the calculation works

The lower and upper energy percentages are divided by 4 kcal per gram.

Formula

The lower and upper energy percentages are divided by 4 kcal per gram.

Step-by-step calculation

  1. Enter a daily calorie amount.
  2. The lower and upper energy percentages are divided by 4 kcal per gram.
  3. Check the displayed result, then copy it if needed.

Worked example

At 2,000 kcal, 45–65% corresponds to roughly 225–325 g/day.

Risk guidance

Frequently asked questions

Does this tool send my inputs anywhere?

No. The interactive calculation runs in your browser and this site does not submit tool inputs to a backend.

How should I use the result?

Check that the entered units and values match your situation, especially around dates, breaks, and rounding.

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