Convert X-unit to foot (US survey)
Please provide values below to convert X-unit [X] to foot (US survey) [ft (US)], or Convert foot (US survey) to X-unit.
How to Convert X-Unit to Foot (Us Survey)
1 X = 3.28765746667982e-13 ft (US)
Example: convert 15 X to ft (US):
15 X = 15 × 3.28765746667982e-13 ft (US) = 4.93148620001973e-12 ft (US)
X-Unit to Foot (Us Survey) Conversion Table
| X-unit | foot (US survey) |
|---|
X-Unit
An X-unit is a unit of length approximately equal to 1.002 x 10⁻¹³ meters.
History/Origin
The X-unit was proposed by the Swedish physicist Manne Siegbahn in 1919 for measuring the wavelengths of X-rays and gamma rays.
Current Use
The X-unit has been largely replaced by the angstrom and the picometer.
Foot (Us Survey)
The U.S. survey foot was a unit of length defined as exactly 1200/3937 meters.
History/Origin
The U.S. survey foot was used for land surveying in the United States for most of the 20th century. Its use was officially phased out in 2022 to standardize with the international foot.
Current Use
The U.S. survey foot is now an obsolete unit.