JGuitar offers the capability to calculate chords and scales for virtually any custom tuning. Use this page to set the tuning and you'll be able to navigate to other pages of the site using the tuning you have selected. The current tuning is always shown on the left bar beside the word "Tuning" in case you forget. There are 2 ways to set the tuning JGuitar uses to calculate chords and scales. You can choose a preset tuning from the drop-down menu or select "Custom..." from the drop-down menu to set a custom tuning using the octave and tone drop-down menus. Click "Update" for the changes to take effect.