Height & Weight Imperial ↔ Metric Converter
Convert feet/inches (ft/in) to centimeters (cm) and pounds/stones (lbs/st) to kilograms (kg) with live BMI calculator
Quickly convert height and weight measurements between the US/Imperial system and the Metric system. It supports compound inputs like feet+inches and stone+pounds, and automatically estimates your Body Mass Index (BMI) in real time.
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How to use
- To convert height, select the 'Height Conversion' tab. To convert weight, select 'Weight Conversion'.
- Type imperial values (ft/in or st/lbs) to instantly see the metric equivalents (cm, kg).
- Alternatively, input metric values (cm, kg) to reverse-convert back to imperial values.
- Check your estimated BMI score and weight range classification in the right bonus panel.
FAQ
- What is a 'stone' (st) weight unit?
- A stone is a unit of weight commonly used in the UK and Ireland for human body weight. 1 stone equals 14 pounds (approx. 6.35 kilograms). This tool provides a dedicated stone+pounds input field for easy usage.
- How is the BMI calculated here?
- Body Mass Index (BMI) is calculated as weight in kilograms divided by height in meters squared (kg/m²). This tool dynamically recalculates your BMI using the converted metric heights and weights.