# BMI Calculator

> Calculate body mass index from a weight in kilograms and a height in metres, and get the health category it falls in: Underweight, Normal weight, Overweight, or Obese. No account or API key required.

App · Health & Fitness · 1 action. Web page: https://docs.lodol.com/docs/integrations/bmi-calculator

## Actions

### Calculate BMI

Calculate body mass index from a weight in kilograms and a height in metres, and get the health category the result falls in: Underweight, Normal weight, Overweight, or Obese. No API key required.

**Inputs**

- Weight (`weight`, number, required): Body weight in kilograms, for example 87.9.
- Height (`height`, number, required): Height in metres, for example 1.75. This is metres, not centimetres, so divide a height in centimetres by 100.

**Outputs**

- `bmi` (number): The calculated body mass index, trimmed to three decimal places.
- `category` (text): The health category for the BMI: Underweight (below 18.5), Normal weight (18.5–24.9), Overweight (25–29.9), or Obese (30 and above).
- `height` (number): The height, in metres, the BMI was calculated from.
- `weight` (number): The weight, in kilograms, the BMI was calculated from.

**Example output**

```json
{
  "bmi": 28.702,
  "category": "Overweight",
  "height": 1.75,
  "weight": 87.9
}
```