Convert from pie [Spanish] to span

Unit Definition (pie [Spanish])
The pie is a traditional foot of Spain. The pie equals 1/3 vara or 12 pulgadas. The pie used in Spain is about 27.86 centimeters or 10.97 inches, but in Spanish Latin America the pie is generally longer.

Unit Definition (span)
Span is the width of a human hand, from the tip of the thumb to the tip of the pinky finger.