From online conversions-
Foot

" The U. S. and Britain signed the Treaty on the Meter (The Metric Act) in 1866 which defind the foot to equal exactly 1200/3937 meters (This is now called the Survey foot).
"Then in 1959 the U. S. National Bureau of Standards redefined the foot to equal exactly 30.48 centimeters. Then in 1963 Britain used this definition for the Weights and Measures Act. This is the definition we use today."
Thus today the British and U. S. foot is the same.

According to Infoplease-
"In 1959 an international agreement was reached among English-speaking nations to use the same metric equivalents for the yard and pound for purposes of science and technology; these values are 1 yd. =0.9144 meter(m) and 1 lb=0.45359237 kilogram (kg)." In the United States, the older definition of the yard as 3,600/3937 m is still used for surveying, the corresponding foot (1200/3937 m) being known as the survey foot."

Whee!