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

Quick Reference

1 U = 1.620e-3 Shackle

1 Shackle = 617.1429 U

U to Shackle Conversion Formula

To convert U to Shackle, multiply by 1.620e-3.

Shackle = U × 1.620e-3

U = Shackle × 617.1429

To convert Shackle back to U, divide by 1.620e-3 (or multiply by 617.1429).

About These Units

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.

About Shackle

The shackle is a traditional unit of length used for measuring the lengths of nautical cables and chains, especially anchor chains. Anchor chains are formed by using shackles to join short lengths of chain. When the anchor is dropped and the chain runs out, a seaman counting the number of shackles can report the total length of chain deployed. The size of the unit therefore varied somewhat, depending on the length of the short chains used. In Britain, the unit became standardized in the 16th century at 12.5 fathoms (75 feet or 22.86 meters). In 1949, the Royal Navy adopted a length of 15 fathoms, which is 90 feet or 27.432 meters; this brought the British shackle in line with the U.S. unit, which is usually called the shot.

U to Shackle Conversion Table

U	Shackle	Shackle	U
0.1	1.620e-4	0.1	61.7143
0.5	8.102e-4	0.5	308.5714
1	1.620e-3	1	617.1429
2	3.241e-3	2	1234.29
5	8.102e-3	5	3085.71
10	0.016204	10	6171.43
20	0.032407	20	12342.86
25	0.040509	25	15428.57
50	0.081019	50	30857.14
100	0.162037	100	61714.29
250	0.405093	250	154285.71
500	0.810185	500	308571.43
1000	1.6204	1000	617142.86

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