China, India and Pakistan each use their own unique system for grading rug quality by knot count. Handmade rugs from any country (except China) are often graded by "knots per square inch." ONLY CHINESE RUGS USE THE "LINE COUNT" SYSTEM SHOWN BELOW Remember that Indian, Chinese, and Persian designed Pakistan rugs show each knot only once and the Pakistan Bekhama rug, show each knot twice. Try these systems on real sugs. Not only are they easy to learn, but you'll feel ike a rug "expert." China All Chinese rugs are graded by "line count." Common line counts include 70 line, 80 line and 90 line. These numbers only tell us how many knots are in a foot of the carpet's width. A 100 line rug has 100 knots in one linear foot across the width of the rug. No other country uses this system. LINE COUNT 50 60 70 80 90 100 110 120 130 150 200 300 Knots per Sq. Inch 17 25 34 44 56 69 84 100 117 156 278 625 Knots per Linear Inch 4 5 6 6.5 7.5 8.33 9 10 11 12.5 16.5 25 Indian Two Number are used such as: 4/25, 5/40. etc. first number> 4/25 <second number First number is the amount of knots in 9/10 of an inch of the rugs width. Second number is the amound of knots in 4 1/2 of the rug's length. Pakistan Rugs are graded by using two numbers: first number> 8/14 <second number First number is the knots in one inch of width. Second number is the knots in one inch of length.