The weight and mass converter is a free online tool that helps you convert between common units quickly and accurately. It supports 9 units including Kilogram (kg), Gram (g), Milligram (mg), Pound (lb), Ounce (oz), Stone (st), Metric Ton (t), Short Ton (US) (short tn). The core conversion formula is: 1 kilogram = 2.20462 pounds = 35.274 ounces. For example, 1 Kilogram equals approximately 1,000 Gram. Conversely, 1 Gram equals approximately 0.001 Kilogram. Common conversions: 5 kg = 5,000 g, 10 kg = 10,000 g, 25 kg = 25,000 g, 50 kg = 50,000 g, 100 kg = 100,000 g. This converter is useful for students, engineers, scientists, and professionals who need accurate common unit conversions. Whether you are working on homework, technical specifications, research data, or everyday measurements, this tool provides instant, reliable results. All conversions are calculated relative to a single base unit for consistency and precision across all supported units. The kilogram is the only SI base unit still defined by a physical artifact (the International Prototype Kilogram). A pound is defined as exactly 0.45359237 kilograms.