Megameter
A megameter (Mm) is a unit of length in the metric system, equal to 1 million meters (1 Mm = 10⁶ meters or 1,000 kilometers). Megameters are used to measure very large distances, typically on a global or planetary scale. For example, the Earth’s diameter is about 12.7 megameters. Although it’s a valid metric unit, the megameter is rarely used in everyday life or science, as kilometers or other astronomical units are more common for such distances.
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.