Gramos

Gramos, singular gramo, is the SI unit of mass used worldwide. The symbol for the unit is g, and one gram is defined as one thousandth of a kilogram, so 1 g equals 0.001 kg. Grams are the more commonly used unit for measuring moderate or small masses in science, commerce, cooking, and daily life.

Historically, the gram was introduced as part of the metric system in the late 18th century and was originally defined as the mass of one cubic centimeter of water at its temperature of maximum density (about 4°C). With the 2019 redefinition of the kilogram based on the Planck constant, the gram remains an exact derived unit, maintaining the relation 1 g = 0.001 kg.

Common submultiples and multiples include milligrams (mg) and kilograms (kg). In practical terms, grams are used to quantify everyday items such as ingredients in cooking, portions of medicine, and small objects, while kilograms are used for heavier masses.

In Spanish and many other languages, the singular form is gramo and the plural is gramos; in English, the plural is grams. The gram is a core component of the metric and International System of Units (SI), facilitating consistent measurement and communication across scientific disciplines and industries.