Gigameter
A gigameter (Gm) is a unit of length in the metric system, equal to 1 billion meters (1 Gm = 10⁹ meters). Gigameters are used to measure very large distances, often within the solar system. For example, the average distance from Earth to the Sun is about 150 gigameters, or 1 astronomical unit (AU). While not commonly used in everyday life, gigameters are helpful in astronomy and space science to describe distances between planets or other celestial bodies.
Roman Actus
The actus was an ancient Roman unit of length used primarily in land measurement. It is approximately 120 Roman feet, which equals about 35.5 meters (around 116.5 feet).
The actus was often used to define dimensions of fields and plots of land. It was also part of Roman surveying practices, helping organize land division and property boundaries.
Key facts:
1 actus = 120 Roman feet ≈ 35.5 meters
Used in Roman land surveying and agriculture
Essential for measuring fields and agricultural plots
Reflects the Roman emphasis on precise land division
The actus highlights the sophistication of Roman engineering and property management in their time.
No conversions available for length.