Weight Unit Converter
Professional weight unit converter supporting fast conversion between kilograms, grams, milligrams, tons, pounds, ounces, carats, dan, jin, liang and more.
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How to use the Weight Unit Converter
This tool converts between common weight units including metric units (ton, kilogram, gram, milligram, microgram), Chinese units (dan, jin, liang, qian), imperial units (pound, ounce, stone, grain) and other units such as carat and troy ounce. All conversions run entirely in your browser with no server requests. It is useful for fitness tracking, logistics weighing, lab recipes, jewelry and precious metal weighing, and everyday shopping conversions.
- Type a value into any unit input (decimals are supported). The value is interpreted as a weight in that specific unit.
- Once you finish input, all other unit fields are updated with converted values so you can easily compare metric, Chinese and imperial systems.
- Inputs must be numbers greater than or equal to 0. When the input is empty or invalid, other fields are cleared to avoid confusion.
- Internally the converter uses grams (g) as the base unit, for example: 1 ton = 1,000,000 grams, 1 kilogram = 1,000 grams, 1 jin = 500 grams, 1 pound ≈ 453.592 grams, 1 carat = 0.2 grams, etc.
FAQ
Why use grams (g) as the internal base unit?
Gram is a widely used SI mass unit that scales well for both large weights (tons, kilograms) and small weights (milligrams, micrograms, carats). Using grams as the unified base unit simplifies conversion logic across all supported units.
What are the relationships between Chinese units (dan, jin, liang, qian) and kilograms?
In this tool we use a common convention: 1 dan = 50 kilograms, 1 jin = 500 grams, 1 liang = 50 grams, 1 qian = 5 grams. Local practices may vary; this converter provides a practical standard suitable for everyday estimation and calculation.
What is the difference between ounce (oz) and troy ounce (oz t)?
Regular ounces (oz) and pounds (lb) are used for everyday and body weight measurements, whereas troy ounces (oz t) are mainly used for pricing and weighing precious metals such as gold and silver. Their gram values differ, so you should choose the unit that matches your use case.
Can I use the results directly for trade or precise billing?
The converter uses JavaScript floating point arithmetic with rounded display values, which is suitable for weight estimation and everyday calculations. For trade, settlement or precise billing, you should rely on calibrated scales and industry standards, and confirm critical values in your professional systems.