Part of what you need to take into consideration is if you want layered or tapered hair, or if you want a more even finished hair length. If you want a finished length, you will then have to measure from the row that will be attached at the highest point of your head, going down to where you want the hair length to end. This will be the length of hair that you will need to order. For a layered look, you would have to measure the longest layer and up to the specific place of attachment. This length would be what you would need to order to accomplish a layered look. Always discuss your goals with your stylist, or have your stylist share suggestions with you. When possible, have your stylist demonstrate how a style or specific length will look.
Measure from the attachment point highest up going down to where you want the hair to end, and determine what needs to be trimmed or cut off. This measurement will indicate what length you would need if you wanted an even hair length without any layers.
