A rack unit (abbreviated U or RU) is a unit of measure defined as 1.75 inches (44.45 mm). It is most frequently used as a measurement of the overall height of 19-inch and 23-inch rack frames, as well as the height ..more definition+
A variant of the point, equal to 0.3759 mm, or 1/72 of a French Royal inch (27.07 mm), or about 1/68 inch. Didot points are used in Europe. This unit is named after the French printer François Ambroise Didot (1730 - 1804) who defined the "point-based" typographical measurement system.
In relation to the base unit of [length] => (meters), 1 Rack Unit (ru) is equal to 0.04445 meters, while 1 Didot Points (didot point) = 0.000375972222 meters.| 1 Rack Unit | to common length units |
|---|---|
| 1 ru | = 0.04445 meters (m) |
| 1 ru | = 4.445E-5 kilometers (km) |
| 1 ru | = 4.445 centimeters (cm) |
| 1 ru | = 0.14583333333333 feet (ft) |
| 1 ru | = 1.75 inches (in) |
| 1 ru | = 0.048611111111111 yards (yd) |
| 1 ru | = 2.7619949494949E-5 miles (mi) |
| 1 ru | = 4.6982348588944E-18 light years (ly) |
| 1 ru | = 168.00002116536 pixels (PX) |
| 1 ru | = 2.778125E+33 planck length (pl) |
| Rack Unit | to Didot Points (table conversion) |
|---|---|
| 1 ru | = 118.2268194271 didot point |
| 2 ru | = 236.4536388542 didot point |
| 3 ru | = 354.6804582813 didot point |
| 4 ru | = 472.9072777084 didot point |
| 5 ru | = 591.13409713551 didot point |
| 6 ru | = 709.36091656261 didot point |
| 7 ru | = 827.58773598971 didot point |
| 8 ru | = 945.81455541681 didot point |
| 9 ru | = 1064.0413748439 didot point |
| 10 ru | = 1182.268194271 didot point |
| 20 ru | = 2364.536388542 didot point |
| 30 ru | = 3546.804582813 didot point |
| 40 ru | = 4729.072777084 didot point |
| 50 ru | = 5911.3409713551 didot point |
| 60 ru | = 7093.6091656261 didot point |
| 70 ru | = 8275.8773598971 didot point |
| 80 ru | = 9458.1455541681 didot point |
| 90 ru | = 10640.413748439 didot point |
| 100 ru | = 11822.68194271 didot point |
| 200 ru | = 23645.36388542 didot point |
| 300 ru | = 35468.04582813 didot point |
| 400 ru | = 47290.72777084 didot point |
| 500 ru | = 59113.409713551 didot point |
| 600 ru | = 70936.091656261 didot point |
| 700 ru | = 82758.773598971 didot point |
| 800 ru | = 94581.455541681 didot point |
| 900 ru | = 106404.13748439 didot point |
| 1000 ru | = 118226.8194271 didot point |
| 2000 ru | = 236453.6388542 didot point |
| 4000 ru | = 472907.2777084 didot point |
| 5000 ru | = 591134.09713551 didot point |
| 7500 ru | = 886701.14570326 didot point |
| 10000 ru | = 1182268.194271 didot point |
| 25000 ru | = 2955670.4856775 didot point |
| 50000 ru | = 5911340.9713551 didot point |
| 100000 ru | = 11822681.94271 didot point |
| 1000000 ru | = 118226819.4271 didot point |
| 1000000000 ru | = 118226819427.1 didot point |