How to use the Fat Intake Calculator
Estimate a daily fat target from energy needs and the selected fat 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
- For the Fat Intake 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.
- Review the selected Fat Intake workflow and inputs, then read fat target in the result panel.
- Change one Fat Intake 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 Fat Intake 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 fat target of 86.5 g/day. Mifflin–St Jeor BMR × activity with maintenance adjustment. Review the displayed units before comparing the result.
Understanding the result
The Fat Intake reports fat 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 Fat Intake estimate by confirming the units and supported ranges for weight, height, age. Compare fat 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 Fat Intake calculate?
Estimate a daily fat target from energy needs and the selected fat share.
Which inputs does the Fat Intake 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 Fat Intake result exact?
Educational estimate only; it cannot diagnose a condition or replace advice from a qualified health professional. Recheck weight, height, age and use fat target only for a decision where that level of precision is appropriate.