kJ100

kJ100 is a shorthand term encountered in nutrition labeling and data tables to indicate energy content expressed as kilojoules per 100 units, typically per 100 grams of solid food or per 100 milliliters of a liquid. It is not a formal SI unit or universal standard; rather, it reflects a convention used in various databases, packaging, and online resources to convey energy density.

In practice, energy values on labels are commonly presented as kilojoules per 100 g or per 100 ml, sometimes written as kJ/100 g or kJ/100 ml. When you see kJ100 in a table or dataset, you should verify the base unit to determine whether the value applies to 100 g or 100 ml.

To convert to calories, note that 1 kilojoule is about 0.239 kilocalories. Therefore, a value of 420 kJ/100 g corresponds to roughly 100 kcal/100 g. This makes kJ100 useful for comparing how energy-dense different foods or beverages are.

kJ100 essentially measures energy density, aiding dietary planning and nutrition research by providing a common basis for comparison. It is commonly used in nutrition labels, dietary databases, and research datasets where a fixed reference amount (per 100 g or 100 ml) is advantageous.

Regulatory context varies by region. Many jurisdictions require energy values per 100 g or per 100 ml on labels, with both kJ and kcal units appearing. Because kJ100 is not a universally standardized term, interpretation should consider the surrounding units and the density context of the product being described.

See also: Kilojoule, Energy density, Nutrition labeling, Kilocalorie.