The length of your Kumihimo cord depends on where you intend to use it. If it is for clothing accents, you may need longer Kumihimo. In case you will use it as a bracelet or necklace, you may need shorter lengths. The key point is to determine your desired finished length. Then, you multiply it by 4 and add 12 inches (31 cm.) more. The number that you will get will be the length of your threads to start your braid. The regular size for a Kumihimo bracelet is 7 to 8 inches (18 to 20 cm.) long. Say your desired length is 7 inches (18 cm.), then multiply it by 4 and add 12 inches (31 cm.) extra. The computation goes (7 X 4) + 12. The answer here is 40 inches (102 cm.). This means that to make a 7 inches (18 cm.) long Kumihimo braid, you need to cut your threads in 40 inches (102 cm.) long each. Say you want a finished cord of 8 inches (20 cm.). Again, use the formula (8 X 4) + 12 and this gives you 44 inches (112 cm.). This will be the length of your thread to begin your braids. You also have to consider if you are going to use end caps. These end caps will add an extra length to your Kumihimo bracelet.