This calculator helps you to quickly calculate the positions of each nut slot to have an equal string spacing and the best playability. All you require is to complete the number of strings, their given diameter and the required outer spacing which ususally is around 2.5mm.
You can complete your data in mm or in inches, it does not change the calculation. Your outcome will be in the sam mm or inches as your input. The result gives you the position of the middle of the string which is the best starting point for making your nut slots!