Use this free online calculator to convert X Unit to U instantly. This all length conversions conversion tool provides accurate results for all your measurement needs.

Quick Reference

1 X Unit = 2.254e-12 U

1 U = 443580811841.70 X Unit

X Unit to U Conversion Formula

To convert X Unit to U, multiply by 2.254e-12.

U = X Unit × 2.254e-12

X Unit = U × 443580811841.70

To convert U back to X Unit, divide by 2.254e-12 (or multiply by 443580811841.70).

About These Units

About X Unit

The X-unit (symbol xu) is a unit of length formerly used to measure the wavelength of X-rays and gamma rays. The X-unit is approximately 1.0021×10-13 metre. Defined by the Swedish physicist Karl Manne Georg Siegbahn (1886-1978) in 1925, the X-unit could not at that time be measured directly; the definition was instead made in terms of the spacing between planes of the calcite crystals used in the measuring apparatus.

About U

The U is a unit of distance used to measure the height of the standard racks in which audio, video, or computer components are mounted. 1U is equal to 1.75 inches (44.45 millimeters), so that, for example, a 2U component is 3.5 inches high, and a 22U rack houses a stack of components 38.5 inches high.

X Unit to U Conversion Table

X Unit	U	U	X Unit
0.1	2.254e-13	0.1	44358081184.17
0.5	1.127e-12	0.5	221790405920.85
1	2.254e-12	1	443580811841.70
2	4.509e-12	2	887161623683.40
5	1.127e-11	5	2217904059208.51
10	2.254e-11	10	4435808118417.02
20	4.509e-11	20	8871616236834.03
25	5.636e-11	25	11089520296042.54
50	1.127e-10	50	22179040592085.08
100	2.254e-10	100	44358081184170.16
250	5.636e-10	250	110895202960425.41
500	1.127e-9	500	221790405920850.81
1000	2.254e-9	1000	443580811841701.63

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