The set of notes that is equal to one quarter note is four sixteenth notes.
- A quarter note is worth 1 beat.
- Two dotted quarter notes would actually equal 3 beats.
- Two half notes would equal 4 beats total.
- Four eighth notes equal 2 beats total.
Therefore, four sixteenth notes (4 x 1/4 beat each = 1 beat) will equal one quarter note.