Does anyone have a proven concrete math formula for figuring out how much paracord is needed for common bracelets like the Cobra, King Cobra, etc? I recently made a King Cobra bracelet size 9 inch wrist with a 1 inch wide whistle buckle (see Paracord Projects for a pic if interested) and I used a total of 21.6feet of paracord. So I rounded it up to 22ft and divided that by 9in (wrist size) = 2.44444 Then to check I put 2.4 times 9 (wrist size) = 21.6 Now since I'm not going to measure out 2.4ft I just rounded up to 2.5ft. If my math is correct it takes 2.5ft per inch (in my case 9inch. Not my wrist size) to make a King Cobra bracelet with 1 inch buckle tying the knots tight.