Common questions about Foot (unit)

Short answers, pulled from the story.

What is the length of the Roman foot in millimeters?

The Roman foot measured about 296 millimeters. Within the Roman Empire, the foot of Nero Claudius Drusus in Germania Inferior stretched to 333 millimeters.

How long is the Neolithic long foot used at Stonehenge?

The Neolithic long foot equals 1.056 modern international feet or 12.672 inches. Archaeologists Mike Parker Pearson and Andrew Chamberlain calculated that stone circles were laid out using multiples of this base unit.

When was the international foot redefined as 0.3048 meters?

The international foot was redefined as exactly 0.3048 meters on the 1st of July 1959. The United States and countries of the Commonwealth of Nations signed the international yard and pound agreement on that date.

What is the difference between the US survey foot and the international foot?

The US survey foot is defined as exactly 1200/3937 meters or approximately 0.3048006096 meters. The National Institute of Standards and Technology deprecated the use of the US survey foot on the 31st of December 2022.

Which countries still use the foot in commercial and engineering activities?

The United States remains the only industrialized country that uses the foot in preference to the meter in its commercial, engineering, and standards activities. The foot is also legally recognized in the United Kingdom and Canada for specific measurements.