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

Quick Reference

1 Ridge = 0.225000 Shackle

1 Shackle = 4.4444 Ridge

Ridge to Shackle Conversion Formula

To convert Ridge to Shackle, multiply by 0.225000.

Shackle = Ridge × 0.225000

Ridge = Shackle × 4.4444

To convert Shackle back to Ridge, divide by 0.225000 (or multiply by 4.4444).

About These Units

About Ridge

The ridge is a traditional Welsh unit of distance equal to 3 leaps or 20 feet 3 inches (6.1722 meters).

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.

Ridge to Shackle Conversion Table

Ridge	Shackle	Shackle	Ridge
0.1	0.022500	0.1	0.444444
0.5	0.112500	0.5	2.2222
1	0.225000	1	4.4444
2	0.450000	2	8.8889
5	1.1250	5	22.2222
10	2.2500	10	44.4444
20	4.5000	20	88.8889
25	5.6250	25	111.1111
50	11.2500	50	222.2222
100	22.5000	100	444.4444
250	56.2500	250	1111.11
500	112.5000	500	2222.22
1000	225.0000	1000	4444.44

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