The double whole note is twice the duration of the whole note, four times the duration of the half note, eight times the duration of the quarter note, sixteen times the duration of the eighth note, thirty-two times the duration of the sixteenth note, sixty-four times the duration of the thirty-second note, 128 times the duration of the sixty-fourth note, and 256 times the duration of the one hundred and twenty-eighth note.

See also [Br.] Breve; [Fr.] Double-ronde; [Ger.] Doppelganze; [Ger.] Doppelganzenote; [It.] Breve; [Sp.] Cuadrada; [Sp.] Doble Redonda.