Template talk:Body roundness index

Layout

Thank you so much for adding default values. I like it how those defaults now provide a meaningful example when the calculator is switched off.

Suggestions, and yes I know, this is a very small user interface, hardly worth optimising, but still:

Remove the borders around cells. They human eye is extremely good in detecting lines, which used to be handy when swinging from one branch to the next. Let the lines around input boxes focus the attention to the input, so the eye can easily 'swing' from one input to the next.
Reduce contrast for field prompts Units, Waist, Height, BRI, e.g. light grey background, dark grey font. You may also want to reduce font size of prompts a little bit to distinguish them from variable output.
Keep a high contrast for input and output fields so they are the focus of attention. Background colour around input fields could be a very light grey so the white of the input fields stands out.
Right align field prompts, left align input fields so the horizontal distance between the two is minimal, minimal eye movement required.
Split the two radio buttons with a line break so they are also vertically aligned and their label texts will be closer together, readable in just one eye-fixation, no eye movement required to read both texts in one go.
Make the radio labels clickable, easy large targets. In HTML they would be labels for the radio inputs. See Fitts's_law, make targets easier to hit by reducing distance and enlarging the size. Recommended reading: a Quiz to give you Fitt's

Uwappa (talk) 04:45, 30 September 2024 (UTC)[reply]

Taking things a step further, shifting more work from human to computer: A calculator that does many calculations. Just one input variable: height. List both cm and feet&inchces for each option. E.g.

160 cm, 5 ft 2.9 inches
161 cm, 5 ft 3.3 inches
162 cm, 5 ft 3.8 inches
...

For the selected height, output many waists, each with its BRI.

Each BRI could be classified: dangerously skinny, too skinny, normal, obese, dangerously obese. A reader could see: where am I now, where should I be? What waist should I aim for? How much waist should I gain or loose? Uwappa (talk) 07:52, 30 September 2024 (UTC)[reply]

test of calculator with one height, many waists, each with BRI

Calculator
Units	1 Metric 0 Imperial
Height	1178 cm5 feet 10.078740157480311 in
BRI for waist 30 cm	-0.77
BRI for waist 50 cm	2.46
BRI for waist 100 cm	4.59
BRI for waist 150 cm	12.09

Uwappa (talk) 16:26, 30 September 2024 (UTC)[reply]