Free Unit Converters
Convert the weight and height measurements used by our health and fitness calculators. Every conversion works instantly in your browser and supports the units commonly used in the UK, US, and metric systems.
Kg to Lbs Converter
Convert kilograms to pounds instantly. Simple, accurate kg to lbs conversion.
lbs = kg × 2.20462
Lbs to Kg Converter
Convert pounds to kilograms instantly. Accurate lbs to kg conversion.
kg = lbs × 0.453592
Kg to Stone Converter
Convert kilograms to stone and pounds. Popular with UK users.
stone = kg ÷ 6.35029
Cm to Feet Converter
Convert centimetres to feet and inches instantly. Essential for height conversions.
feet = cm ÷ 30.48
Why unit consistency matters
Health formulas are sensitive to units. Entering pounds where a formula expects kilograms, or inches where it expects centimetres, can make an otherwise correct result meaningless. These converters provide a clear intermediate value before you use another tool.
For reference, one kilogram equals approximately 2.20462 pounds, one stone equals 14 pounds, and one inch equals 2.54 centimetres.