Conversion Calculators
Weight Converter
Convert weight and mass between kilograms, grams, milligrams, metric tonnes, pounds, ounces, and stones.
Quick guide
Enter a value and choose the units to convert between kilograms, grams, milligrams, tonnes, pounds, ounces, and stones. All conversions go through kilograms using exact factors (1 lb = 0.45359237 kg).
Read the full explanationHow It Works
Mass units convert through kilograms. One avoirdupois pound is exactly 0.45359237 kg by international agreement.
Formula Used
value × from-factor ÷ to-factor (base unit: kilogram).
Example Calculation
70 kg = 154.32 lb; 8 oz = 226.8 g.
Practical Use Cases
- Convert body weight between kg and lb.
- Scale recipes between grams and ounces.
- Compare shipping weight limits.