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

Quick Reference

1 Shackle = 4.4444 Ridge

1 Ridge = 0.225000 Shackle

Shackle to Ridge Conversion Formula

To convert Shackle to Ridge, multiply by 4.4444.

Ridge = Shackle × 4.4444

Shackle = Ridge × 0.225000

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

About These Units

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.

About Ridge

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

Shackle to Ridge Conversion Table

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

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