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HEALTH

Carbohydrate Calculator

Estimate a daily carbohydrate target from energy needs and the selected carbohydrate share.

Choose a nutrition goalEstimate maintenance, gradual loss, or gradual gain.
3 options
CARBOHYDRATE TARGET291.9 g/day

Mifflin–St Jeor BMR × activity with maintenance adjustment. Educational estimate only; not medical advice.

Daily calories
2594 kcal
Carbohydrate
291.9 g
Protein
120.0 g
Fat
86.5 g
Estimate based on the values shown
MethodMifflin–St Jeor or Katch–McArdle BMR, activity expenditure, goal adjustment, and nutrient allocation.

Before you use the result

Educational estimate only; it cannot diagnose a condition or replace advice from a qualified health professional.

Sources

CALCULATOR GUIDE

How to use the Carbohydrate Calculator

Estimate a daily carbohydrate target from energy needs and the selected carbohydrate share. It includes Maintain, Gradual loss, Gradual gain workflows, so choose the one that matches the values you actually know. Use it to understand an educational estimate and the inputs behind it, not as a diagnosis or treatment decision.

Step by step

  1. For the Carbohydrate example, select Maintain and enter weight, height, age, gender, activity, and the remaining settings listed in the worked example. Keep each value in the unit displayed beside its field.
  2. Review the selected Carbohydrate workflow and inputs, then read carbohydrate target in the result panel.
  3. Change one Carbohydrate assumption at a time to compare scenarios. Use Reset to restore this tool's worked example values.

How the calculation works

Mifflin–St Jeor or Katch–McArdle BMR, activity expenditure, goal adjustment, and nutrient allocation.

Worked example

To reproduce the Carbohydrate worked example, reset the calculator. Select the Maintain workflow. Use weight 75 kg; height 175 cm; age 35 years; gender Male; activity 1.55 factor; bmr estimation formula Mifflin; carbohydrate share 45 %; protein per kg 1.6 g/kg; fat share 30 %. The result is carbohydrate target of 291.9 g/day. Mifflin–St Jeor BMR × activity with maintenance adjustment. Review the displayed units before comparing the result.

Understanding the result

The Carbohydrate reports carbohydrate target. Use it to understand an educational estimate and the inputs behind it, not as a diagnosis or treatment decision. Educational estimate only; it cannot diagnose a condition or replace advice from a qualified health professional.

How to check the answer

Check the Carbohydrate estimate by confirming the units and supported ranges for weight, height, age. Compare carbohydrate target with another published method or direct measurement when available, and ask a clinician before using it for a health decision.

Common questions

What does the Carbohydrate calculate?

Estimate a daily carbohydrate target from energy needs and the selected carbohydrate share.

Which inputs does the Carbohydrate example use?

The worked example uses weight, height, age, gender, activity, and the remaining settings listed in the worked example in the Maintain workflow. Other workflows can show different fields. Keep the chosen workflow and units with the result when comparing calculations.

Is the Carbohydrate result exact?

Educational estimate only; it cannot diagnose a condition or replace advice from a qualified health professional. Recheck weight, height, age and use carbohydrate target only for a decision where that level of precision is appropriate.

Formula tests, limits, and sources reviewed September 1, 2026. Guide examples updated October 12, 2026.
INTERPRET THE RESULTRead the health guideCheck assumptions, limitations and comparison methods →