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Calculator Tools
Nutrition Calculators

Fiber Calculator

Daily fibre target from calorie intake or age and sex, with how much a typical diet provides.

Enter values

Results update as you type.

Result

Fibre target

31 g/day

Guideline by age & sex
38 g/day
Per meal
10.3 g

Educational estimate only — not medical advice. Talk to a healthcare professional about your individual situation.

About the Fiber Calculator

Daily fibre target from calorie intake or age and sex, with how much a typical diet provides.

Also known as: fibre intake, daily fiber, how much fiber per day.

How to use this calculator

  1. Enter daily calories, sex, age.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Review the breakdown shown under the main result.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

14 g of fibre per 1,000 kcal

Worked example

Using the values pre-filled in the calculator above:

  • Daily calories = 2,200 kcal
  • Sex: Male
  • Age = 35 years

the calculator returns:

  • Fibre target: 31 g/day
  • Guideline by age & sex: 38 g/day
  • Per meal: 10.3 g