Definition:Imperial/Length
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Definition
The imperial units of length are as follows:
Mil
| \(\ds \) | \(\) | \(\ds 1\) | mil | |||||||||||
| \(\ds \) | \(=\) | \(\ds \dfrac 1 {1000}\) | inch | |||||||||||
| \(\ds \) | \(=\) | \(\ds 25 \cdotp 4\) | microns | |||||||||||
| \(\ds \) | \(=\) | \(\ds 0 \cdotp 0254\) | millimetres | |||||||||||
| \(\ds \) | \(=\) | \(\ds 2 \cdotp 54 \times 10^{-5}\) | metres |
Inch
| \(\ds \) | \(\) | \(\ds 1\) | inch | |||||||||||
| \(\ds \) | \(=\) | \(\ds 2 \cdotp 54\) | centimetres | |||||||||||
| \(\ds \) | \(=\) | \(\ds 0 \cdotp 0254\) | metres |
This definition is exact, and is how the imperial unit of length is defined.
Link
| \(\ds \) | \(\) | \(\ds 1\) | link | |||||||||||
| \(\ds \) | \(=\) | \(\ds 7 \cdotp 92\) | inches | |||||||||||
| \(\ds \) | \(=\) | \(\ds \dfrac 1 {100}\) | chains | |||||||||||
| \(\ds \) | \(=\) | \(\ds 201 \cdotp 168\) | millimetres |
Foot
The foot is the FPS base unit of length.
| \(\ds \) | \(\) | \(\ds 1\) | foot | |||||||||||
| \(\ds \) | \(=\) | \(\ds 12\) | inches | |||||||||||
| \(\ds \) | \(=\) | \(\ds 30.48\) | centimetres | |||||||||||
| \(\ds \) | \(=\) | \(\ds 0 \cdotp 3048\) | metres |
Yard
| \(\ds \) | \(\) | \(\ds 1\) | yard | |||||||||||
| \(\ds \) | \(=\) | \(\ds 3\) | feet | |||||||||||
| \(\ds \) | \(=\) | \(\ds 36\) | inches | |||||||||||
| \(\ds \) | \(=\) | \(\ds 91 \cdot 44\) | centimetres | |||||||||||
| \(\ds \) | \(=\) | \(\ds 0 \cdotp 9144\) | metres |
Rod, Pole or Perch
| \(\ds \) | \(\) | \(\ds 1\) | rod, pole or perch | |||||||||||
| \(\ds \) | \(=\) | \(\ds 5 \tfrac 1 2\) | yards | |||||||||||
| \(\ds \) | \(=\) | \(\ds 16 \tfrac 1 2\) | feet | |||||||||||
| \(\ds \) | \(=\) | \(\ds 502 \cdot 92\) | centimetres | |||||||||||
| \(\ds \) | \(=\) | \(\ds 5 \cdotp 0292\) | metres |
Chain
| \(\ds \) | \(\) | \(\ds 1\) | chain | |||||||||||
| \(\ds \) | \(=\) | \(\ds 4\) | rods, poles or perches | |||||||||||
| \(\ds \) | \(=\) | \(\ds 22\) | yards | |||||||||||
| \(\ds \) | \(=\) | \(\ds 66\) | feet | |||||||||||
| \(\ds \) | \(=\) | \(\ds 100\) | links | |||||||||||
| \(\ds \) | \(=\) | \(\ds 20 \cdotp 1168\) | metres |
Furlong
| \(\ds \) | \(\) | \(\ds 1\) | furlong | |||||||||||
| \(\ds \) | \(=\) | \(\ds 10\) | chains | |||||||||||
| \(\ds \) | \(=\) | \(\ds 40\) | rods, poles or perches | |||||||||||
| \(\ds \) | \(=\) | \(\ds 220\) | yards | |||||||||||
| \(\ds \) | \(=\) | \(\ds 660\) | feet | |||||||||||
| \(\ds \) | \(=\) | \(\ds 201 \cdotp 168\) | metres |
International Mile
| \(\ds \) | \(\) | \(\ds 1\) | (international) mile | |||||||||||
| \(\ds \) | \(=\) | \(\ds 8\) | furlongs | |||||||||||
| \(\ds \) | \(=\) | \(\ds 80\) | chains | |||||||||||
| \(\ds \) | \(=\) | \(\ds 320\) | rods, poles or perches | |||||||||||
| \(\ds \) | \(=\) | \(\ds 1760\) | yards | |||||||||||
| \(\ds \) | \(=\) | \(\ds 1609 \cdotp 344\) | metres (exactly) |
League
| \(\ds \) | \(\) | \(\ds 1\) | league | |||||||||||
| \(\ds \) | \(\) | \(\ds 3\) | (international) miles | |||||||||||
| \(\ds \) | \(=\) | \(\ds 5280\) | yards | |||||||||||
| \(\ds \) | \(\approx\) | \(\ds 2\) | leuca | |||||||||||
| \(\ds \) | \(\approx\) | \(\ds 3000\) | paces | |||||||||||
| \(\ds \) | \(=\) | \(\ds 4828 \cdotp 032\) | metres (exactly) |