Knot density (KPSI)

Knot density is the number of knots in a unit of area: knots per square inch (KPSI) in English-language trade, per square decimetre or metre in Europe. It is the knots across multiplied by the rows down. To convert raj, divide by 7 and multiply by 2.54 for knots per inch across; if rows match, KPSI is about raj squared times 0.13, so 40 raj is about 210 KPSI. One KPSI is 1,550 knots per square metre.

Also knots per square inch · knots per square metre · knots per square decimetre · knot count

See also Raj, Jufti knot

Last reviewed November 2026