If this tool helped you, you can buy us a coffee ☕
Accurately convert between 20+ weight and mass units including kilograms, pounds, ounces, and carats. Perfect for cooking, logistics, and scientific research.
Circle Area Calculator
Quickly calculate the area of a circle by entering the radius, diameter, or circumference. Supports custom units and precision settings.
Least Common Multiple (LCM) Calculator
Quickly calculate the least common multiple (LCM) of two or more integers. Supports space-separated number list input.
Prime and Composite Number Calculator
Instantly identify prime, composite, or special numbers. Supports batch checking and mathematical property analysis.
When you encounter mass units from different countries or systems in cooking, fitness, logistics, or scientific research, manual conversion is not only time-consuming but also prone to errors. This tool is a mass unit converter based on precise conversion factors. It instantly converts your input into over 20 common units, including the International System of Units (e.g., kilograms, grams), US Customary and Imperial units (e.g., pounds, ounces), traditional Chinese units (e.g., jin, liang), and industry-specific units (e.g., carats, grains). Mass (commonly referred to as weight) is a measure of the amount of matter in an object, and its base SI unit is the kilogram (kg).
Q: How many grams are in a pound?
One pound (lb) is exactly equal to 453.59237 grams (g). This is the precise conversion factor between the Imperial mass unit and the SI unit of grams.
Q: How is the precision of the conversion results guaranteed? Are there limits to the maximum/minimum values supported?
The tool uses high-precision floating-point numbers for internal calculations and controls the final displayed decimal places through the user-defined "Precision" parameter, preventing cluttered displays caused by infinite decimals. Regarding the input value itself, the tool is primarily limited by JavaScript's number representation range (approximately ±1.7976931348623157e+308), which is rarely reached in everyday use. However, it is recommended to avoid entering extremely small (e.g., below 1e-308) or extremely large numbers to prevent precision loss.
Please note: The input must be a valid number; non-numeric characters will cause the conversion to fail. This tool performs "mass" unit conversions. Under standard gravitational acceleration, the results are equivalent to what is commonly referred to as "weight." Strictly speaking, however, mass is an intrinsic property of an object and does not change with geographic location. All calculations are performed locally in your browser. Your input data is never uploaded to our servers, ensuring complete privacy. This tool does not support batch file processing.
For professional scenarios requiring high-precision conversions (such as precious metal trading or pharmaceutical compounding), we recommend setting the precision to 6 decimal places or higher. Also, note that "ton" in international trade usually refers to a "metric ton" (1000 kg), whereas "long ton" and "short ton" are Imperial and US customary units with different conversion factors. A typical conversion example: converting 1 troy ounce to grams (g) and carats (ct). Enter "1", select "Ounce (oz)" as the unit, and set the precision to 4. The result will be approximately 31.1035 grams and 155.5175 carats.
