About BMI Insights

What this is

Seven calculators — BMI, BMR, body fat, calories, macros, ideal weight and water — built on standard formulas such as the WHO BMI bands, with the maths written out on every calculator page.

• Metric or imperial, instant results.
• No account needed; what you type is kept in your browser only until you close the tab.
• Short guides on what each number means.

Who makes it

An independent developer who wanted a clean calculator that explains more than a single number.

Use it as a starting point

These tools are for screening and general information, not diagnosis. Talk to a doctor about your own health. Spotted an error or have an idea? Get in touch.