Convert Centimeter (cm) to Roman Actus (actus) instantly.
About these units
Centimeter (cm)
The centimeter, 1/100 of a meter, strikes a balance between precision and ease of communication, making it indispensable in everyday life. Its size is well-matched to human-scale objects—furniture, body dimensions, school supplies, and clothing—so people in metric countries regularly estimate or visualize lengths in centimeters without tools. Many professions rely heavily on centimeters, including medicine (wound sizes, tumor dimensions), tailoring, building trades, and interior design. In science, centimeters serve as a practical unit for measurements too small for meters but too large for millimeters. Biologists, for example, may measure specimen sizes or growth stages in centimeters. Its intuitive scale and decimal alignment with meters ensure that both laypeople and professionals can convert easily among related units.
Roman Actus (actus)
The Roman actus was an ancient Roman unit of length measuring 120 Roman feet, or about 35.5 meters. It played an essential role in Roman land surveying and agriculture, forming part of the system used to organize farms, roads, and territorial divisions in the expanding Roman world. The actus helped define a square unit of land known as the actus quadratus, which was used for taxation, distribution of land to soldiers, and standardizing plots throughout Roman colonies. Surveyors relied on tools like the groma to lay out straight lines based on actus subdivisions, giving Roman lands their characteristic grid patterns. Although long obsolete, the actus provides key insights into Roman engineering, colonial administration, and agricultural policy. Many European land patterns can trace their roots back to Roman measurement practices — a testament to the enduring legacy of Roman surveying.