Long explanation and question for what to me is probably more complicated than it really is -
As I am getting into making paracord bracelets I am getting more and more confused about sizing for others that provide me with a wrist measurement. I have been practicing making bracelets for friends and family who are providing me there wrist measurement - using a tape measure or a strip of paper wrapped around the wrist and measured around the wrist. If the measurement is between a whole size and a half it is rounded up to the half and if it is between the half and the whole, it is rounded up to the whole. The problem comes when the measurement is exactly a whole number or a half. I have read all about sizing and found a formula on one paracord bracelet maker's website that includes the thickness of the bracelet in the calculation of what to add to the measured size to make a bracelet that fits well - which for the Cobra stitch consistently calculates to adding an inch to the measurement. With that inch it seems that any bracelet that I make for example for someone with an exact 7" wrist, making the bracelet at 8" results in a very, very snug fit and the measured bracelet come out to about 7 3/4" long rather than 8. There is no problem when rounding up to the nearest whole or half size as extra is added with that automatically in addition to the inch I am adding. I am using a jig and the jig is set to 8". I have checked the markings on the jig and they are correct as is the jig when set to a marking. The buckles that I am using are 5/8" buckles.
So while I can find a lot of instructions about how to size a bracelet on someone's wrist that you fit with the cord and check fit before finishing, I find nothing about sizing a bracelet when you just have a measurement. I can't have web orders come back for the wrong size - with that I might as well not even start selling. I know there has to be a trick to this.
Please share what you do. Thanks!

As I am getting into making paracord bracelets I am getting more and more confused about sizing for others that provide me with a wrist measurement. I have been practicing making bracelets for friends and family who are providing me there wrist measurement - using a tape measure or a strip of paper wrapped around the wrist and measured around the wrist. If the measurement is between a whole size and a half it is rounded up to the half and if it is between the half and the whole, it is rounded up to the whole. The problem comes when the measurement is exactly a whole number or a half. I have read all about sizing and found a formula on one paracord bracelet maker's website that includes the thickness of the bracelet in the calculation of what to add to the measured size to make a bracelet that fits well - which for the Cobra stitch consistently calculates to adding an inch to the measurement. With that inch it seems that any bracelet that I make for example for someone with an exact 7" wrist, making the bracelet at 8" results in a very, very snug fit and the measured bracelet come out to about 7 3/4" long rather than 8. There is no problem when rounding up to the nearest whole or half size as extra is added with that automatically in addition to the inch I am adding. I am using a jig and the jig is set to 8". I have checked the markings on the jig and they are correct as is the jig when set to a marking. The buckles that I am using are 5/8" buckles.
So while I can find a lot of instructions about how to size a bracelet on someone's wrist that you fit with the cord and check fit before finishing, I find nothing about sizing a bracelet when you just have a measurement. I can't have web orders come back for the wrong size - with that I might as well not even start selling. I know there has to be a trick to this.
Please share what you do. Thanks!