Good morning, I am developing a web app on Body Mass Index calculation. Related to the BMI calculation I want to show a counter. Inside the counter, that looks like a speedometer, there's an arrow that rotates and points to the BMI result. Like that:
Here you can find the graphic reference
The rotation of the arrow is determined by a number, that changes when the BMI changes. I can actually see the results but I can't find the formula behind the releation beatween the BMI and this number. This is the chart I have extracted:
+------+--------+
| BMI | NUMBER |
+------+--------+
| 19 | 36 |
| 19.1 | 36.6 |
| 19.2 | 37.2 |
| 19.3 | 37.8 |
+---------------+
Considerations:
When BMI rises by 0.1, the number rises by 0.6 . I need to know, for example: given BMI 21, what equals the "number"?
Additional info:
BMI formula is: weight (kg) / (height*height) (m²)
Maybe it is easy, but I am not good at math.