Convert kg to g

Kilogram

Definición
The kilogram (kg) serves as the primary unit of mass in the International System of Units (SI). Since May 2019, it’s defined by fixing Planck’s constant (h = 6.62607015 × 10⁻³⁴ J·s), with the metre and second tied to the speed of light and the cesium-133 transition. Although the reference method changed, one kilogram remains exactly the same mass worldwide.

Origin & Evolution
“Kilogram” comes from the French kilogramme, combining Greek kilo- (“thousand”) with Latin gramma (“small weight”). Originally (1794), it was based on the mass of one litre of water at freezing point. Later, a platinum-iridium cylinder stored in France became the standard until minute drifts prompted the 2019 switch to a fundamental-constant definition.

Today’s Usage
As the SI’s base mass unit, the kilogram underlies nearly every professional and commercial measurement—from manufacturing and science to international trade. In everyday life, most countries use kilograms for groceries, shipping, and personal weight, although the U.S. still often pairs them with customary units.

Gram

Definición
A gram (g) is defined as one-thousandth of a kilogram. Inheriting the kilogram’s constants-based definition, one gram equals exactly 0.001 kg, ensuring consistent precision without dependence on a physical artifact.

Origin & Evolution
The concept of a gram began as the mass of one cubic centimetre of water at 4 °C within the old CGS framework. When SI adopted the kilogram as its base, the gram was simply redefined as 0.001 kg, preserving its historical ratio.

Today’s Usage
Grams are indispensable in cooking (weighing ingredients), nutrition labeling (per 100 g), laboratory analysis, and packaging worldwide.

Kilogram → Gram Conversion Table

Cómo convertir

• 1 kg = 1000 g

• 1 g = 0.001 kg

Ejemplo

To convert 15 kg to grams:

15 kg × 1000 = 15000 g