Fitness Utility
Weight Converter
Convert kilograms, pounds, stone, grams, and ounces instantly. Add your height and target weight to estimate BMI and a simple progress timeline.
Goal Projection
Healthy weight range shownBMI is a general screening estimate and does not replace professional medical advice.
How to Use This Weight Converter Calculator
Enter any weight value, choose the unit you already have, and the calculator will instantly show the equivalent weight in kilograms, pounds, stone, grams, and ounces. You can also enter your height to estimate BMI and set a target weight to see a simple weekly progress timeline.
This tool is useful for fitness tracking, recipe measurements, travel luggage checks, product weight conversion, school assignments, and comparing weight values across countries that use different measurement systems.
Weight Conversion Formulas
| Conversion | Formula |
|---|---|
| Kilograms to pounds | kg x 2.20462 |
| Pounds to kilograms | lb x 0.453592 |
| Stone to kilograms | stone x 6.35029 |
| Ounces to grams | oz x 28.3495 |
Common Weight Conversion Examples
- 50 kg is about 110.23 lb.
- 70 kg is about 154.32 lb or 11.02 stone.
- 100 lb is about 45.36 kg.
- 12 stone is about 76.20 kg or 168 lb.
Where This Calculator Helps
- Fitness plans: compare body weight in kg, lb, and stone.
- Travel: convert luggage limits between kilograms and pounds.
- Shopping: compare product or package weights from international stores.
- Education: quickly check unit conversion answers.
Frequently Asked Questions
How many pounds are in 1 kilogram?
One kilogram equals about 2.20462 pounds.
How many kilograms are in 1 stone?
One stone equals about 6.35029 kilograms, or 14 pounds.
Is BMI accurate for everyone?
BMI is useful for a quick estimate, but it may not reflect muscle mass, pregnancy, age, or medical conditions.
What is the easiest way to convert kg to lb?
Multiply kilograms by 2.20462. For a quick estimate, multiply kg by 2.2.
Why do some countries use stone for body weight?
Stone is still commonly used for body weight in the United Kingdom and Ireland. One stone equals 14 pounds.