Body metrics

Fat-free mass index

Fat-free mass index (FFMI) and its height-normalized value from weight, height, body-fat % and sex (Kouri 1995 normalization).

Cites its source in every response: source (the formula + published reference) and canonical_url (https://myplate.food/ffmi-calculator), plus a disclaimer.

get/calculate/ffmi

Request

  • Base URL: https://myplate.food/api/v1
  • URL: https://myplate.food/api/v1/calculate/ffmi
  • Auth: none declared

Query parameters

unit'metric' | 'imperial'

Units for inputs and output. metric = cm/kg (default), imperial = in/lb.

sex'male' | 'female' required

Biological sex — drives the equation.

weightnumber required

Weight (kg or lb).

heightnumber required

Height (cm or in).

body_fatnumber required

Body-fat percentage (0–70).

Response

Calculation result with citation envelope.

calculatorstring required

The endpoint name.

inputsobject

The parsed, normalized inputs the result was computed from.

sourcestring required

The formula and published reference behind the number.

canonical_urlstring uri required

The matching myplate.food page.

disclaimerstring

Present on health calculators.

Changes

No recorded changes to this operation across all 1 revision of this API.