length · Ancient Greece / Rome · Antiquity

pes (Roman foot)

approx.

Record: M123
Definition quality: Historically reconstructed
Conversion mode: multiplicative
Calculator: Approximately calculable

Approximate, not exact.

Definition

Surviving foot-rules, monuments and planning evidence support this scale.

Reference value

One pes (Roman foot) is understood to be about 0.296 metres.

History & use

Surviving foot-rules, monuments and planning evidence support this scale.

Modern use

Retained primarily for historical, educational, or reference use rather than as a current standardized calculator unit.

Did you know?

The Roman foot had two simultaneous subdivision schemes: 12 unciae ('twelfths') or 16 digits—an ancient reminder that one unit system could mix duodecimal and body-based counting.

Sources & evidence

Source tier Tier B/C — recorded secondary/reference source · confidence High

Related measurements

metre

length · International · Modern

SI base unit of length. Its definition fixes the speed of light in vacuum at exactly 299,792,458 m/s, with the second defined from the caesium-133 hyperfine frequency.