Vitals
BMI Calculator
Planned for launch
Body mass index (BMI) is weight divided by height squared. The NurseTools BMI calculator works it out in metric or US units and shows the formula, units and source next to the result.
The formula
BMI = weight (kg) ÷ height (m)². In US units: BMI = 703 × weight (lb) ÷ height (in)².
What the tool does
- Metric or US units. Switching converts the values you entered.
- Weight and height steppers with a live result.
- A neutral scale marker with no diagnostic colors.
- Formula, units, source, version and review status one tap away.
- Copy and reset, with no patient details stored.
Status
This tool is planned to be available in the free app at launch. NurseTools is coming soon to the App Store for iPhone. The tool shows arithmetic and units. It does not interpret results or recommend care.
How NurseTools reviews clinical content
Learn the math: How to Calculate BMI: Formula, Units and a Worked Example
Questions
Is the BMI calculator free?
Yes. It is part of the free core app and is planned to be available at launch.
Does the BMI calculator interpret the result?
No. It shows the arithmetic and units. It does not diagnose or recommend care.
Can I use it for children?
Adult BMI categories do not apply to children and teens, who are assessed with BMI-for-age percentiles. Follow your facility tools for pediatric patients.
Related tools
- Mean Arterial Pressure (planned for launch)