Weight Converter
Convert weight between mg, g, kg, ton, oz, lb units.
Input Information
Result
Weight Converter provides accurate conversions between various weight and mass units. You can quickly convert between milligrams (mg), grams (g), kilograms (kg), tons, ounces (oz), and pounds (lb), freely switching between metric and imperial units.
Weight unit conversion is needed in cooking and baking, science experiments, logistics and transportation, health and weight management, and across daily life and industry. It is particularly useful for preventing unit confusion when dealing with imported food nutrition labels or overseas specification documents.
For students, it serves as learning material to develop a sense of units. For researchers, chefs, and logistics personnel, it is a practical tool. Accurate measurement is crucial as it determines the success of cooking and the reliability of experiments.
Conversion coefficients follow international standards. 1 kg = 1,000 g = 2.2046 lb, and the ton is based on the metric ton (1,000 kg). Be aware that this differs from the US ton (short ton, approx. 907 kg) and UK ton (long ton, approx. 1,016 kg).
Term Glossary
- Metric vs Imperial
- The metric system is the international standard based on kg·m·s, while the imperial system uses pounds·ounces·inches. Conversion is necessary as they are used interchangeably across countries and fields.
- Metric Tonne
- The international standard ton based on 1,000 kg. It differs from the US short ton (approx. 907 kg) and UK long ton (approx. 1,016 kg), so unit definitions in documents or contracts must be verified.
- Choose the input unit to convert from. (g, kg, lb, oz, etc.)
- Enter the value you want to convert.
- Choose the output unit to convert to.
- Run the conversion and results in all units are shown automatically.
1 kg → lb
1 kilogram (kg) is approximately 2.2046 pounds (lb). It is often used for body weight and cargo.
1 lb → g
1 pound (lb) is approximately 453.6 grams (g). It is used in US recipes and food packaging.
100 g → oz
100 grams (g) is approximately 3.527 ounces (oz). This is a common conversion in food nutrition.
Weight Unit Conversion Relationships
Calculation Example
Converting 5 kg to pounds (lb):
5 kg × 2.2046 = 11.023 lb
Everyday Weight Comparisons
- Apple: approx. 150~200 g, Average adult weight: 70~80 kg
- Small car: 1~1.5 ton, Elephant: 4~6 ton
Weight in Cooking
- Korean cooking mainly uses g, while Western cooking uses oz·cups.
- Precise weight measurement is important for baking consistency.
International Trade
- The metric tonne is the standard in international trade.
- Used for grain, oil, and mineral trade volume calculations.
Laboratory Measurement
- Measure precisely with an electronic balance and standardize units.
- Mass-based calculation is stable since volume changes with temperature.
Ton Unit Caution
- Metric tonne, US ton, and UK ton have different values.
- Always verify the unit definition in contracts.
Health Management
- Record body weight and muscle mass in kg.
- Distinguish between g and mg on nutrition labels.
QHow do kilograms and pounds differ?
The kilogram is the metric unit of mass while the pound is the imperial unit of mass. 1 kg is about 2.2046 lb, and conversely 1 lb is about 0.4536 kg.
QHow do grams and ounces differ?
The gram is a small metric mass unit while the ounce is a small imperial mass unit. One ounce is about 28.35 grams.
QWhat is the difference between mass and weight?
Mass is the amount of matter in an object and is independent of gravity. Weight is the force of gravity acting on mass, which changes with location. For example, on the Moon your weight is about 1/6 but your mass is unchanged.
QWhat are the different types of tons?
A metric ton is 1,000 kg, a US short ton is about 907 kg (2,000 lb), and a UK long ton is about 1,016 kg (2,240 lb).
QWhy is body weight measured in kg in some countries and lb in others?
Countries using the metric system measure body weight in kilograms (kg), while the US and some other countries using the imperial system use pounds (lb). This tool converts easily between the two.