Decimeters to Astronomical Units

Decimeter

A decimeter (dm) is a metric unit of length equal to one-tenth of a meter. It sits between centimeters and meters in size, making it helpful for measurements that are too large for centimeters but too small for full meters. Although not as commonly used in day-to-day tasks, the decimeter is important in education, engineering, and scientific contexts.

Because it is part of the metric system, converting decimeters into other units is simple—for example, 1 decimeter = 10 centimeters and 0.1 meters. A unit converter can help you switch quickly between measurements when precision is important.

Astronomical Unit

An astronomical unit (AU) is a standard space measurement based on the distance from the Earth to the Sun—about 149.6 million kilometers or 93 million miles. It helps describe solar system distances in practical numbers rather than extremely large values.

Astronomers use AU values to measure orbits of planets, asteroids, and comets relative to Earth.