Convert milligrams to grams

Milligram

Definición
A milligram (symbol: mg) is an SI-derived unit of mass equal to one-thousandth of a gram or one-millionth of a kilogram (1 mg = 0.001 g = 0.000001 kg). It inherits its precision from the kilogram’s constants-based definition.

Orígenes
The “milli-” prefix has been part of the metric system since its inception, indicating a factor of 10⁻³ relative to the base unit. Although the SI base unit is the kilogram, the milligram is formally defined through its relationship to the gram, which itself is 0.001 kg.

Current Use
Milligrams are essential whenever very small masses matter—pharmaceutical dosages, vitamin supplements, laboratory reagents, and precision industrial components all rely on this submultiple.

Gram

Definición
A gram (symbol: g) is an SI unit of mass equal to one-thousandth of a kilogram (1 g = 0.001 kg). Since 2019, the kilogram—and thus the gram—is anchored to Planck’s constant (h = 6.62607015 × 10⁻³⁴ J·s), ensuring an exact, artifact-free standard.

Orígenes
Originally defined as the mass of one cubic centimetre of pure water at 4 °C, the gram was part of the older CGS system. When SI standardized the kilogram, the gram was redefined simply as 0.001 kg.

Current Use
Grams are ubiquitous in cooking (weighing ingredients), nutrition labels (values per 100 g), laboratory work, and retail packaging around the world.

Milligram → Gram Conversion Table

Cómo convertir

• 1 mg = 0.001 g

• 1 g = 1000 mg

Ejemplo

Convert 15 mg to grams:

15 mg × 0.001 = 0.015 g