Which Way Do Note Stems Go?
The simple rule for stem direction when you hand-notate music — plus what to do with chords, beamed groups, and two voices on one staff.
🎯 Quick answer
Look at where the note sits relative to the middle line of the staff:
- Below the middle line → stem points UP (on the right side of the notehead).
- On or above the middle line → stem points DOWN (on the left side of the notehead).
That covers single notes. Chords, beams, and two-voice writing add one rule each — all below.
1 The middle-line rule
Every five-line staff has a middle (third) line. That line is the pivot for stem direction, and the rule is the same in every clef — treble, bass, alto, or tenor:
- A note below the middle line gets an upward stem.
- A note on or above the middle line gets a downward stem.
The point is to keep stems tucked toward the staff so the notation stays compact and easy to read.
What about a note sitting on the middle line?
It can go either way, but the default is stem down. In a run of notes you might flip it to match its neighbors and keep things looking even — but on its own, down is standard.
2 Which side, and how long
Direction also decides which side of the notehead the stem touches:
- Stem up → attaches to the right side of the notehead.
- Stem down → attaches to the left side of the notehead.
Stem length is normally about one octave (roughly 3.5 staff spaces). For notes far above or below the staff on ledger lines, lengthen the stem so it reaches back toward the middle line — that keeps the note visually anchored to the staff.
3 Chords: the farthest note wins
When two or more notes share a single stem, you can't point it two ways. The rule: the note farthest from the middle line decides the direction for the whole chord. If it's a tie, stem down.
4 Beamed groups: one direction for the group
Eighth notes, sixteenths, and other beamed notes are joined by a beam instead of individual flags — and the whole group shares one stem direction. Again, the note farthest from the middle line in the group decides it.
So even if a beamed run crosses the middle line, you don't flip stems note by note — you pick a single direction for the beam and stick with it.
5 Two voices on one staff
Here's the exception that trips people up. When two independent voices share a staff — think soprano and alto on the top staff of an SATB hymn, or any two-part writing — the middle-line rule is overridden:
- Upper voice → stems always up.
- Lower voice → stems always down.
This holds no matter where the notes sit on the staff. The split stems are what let a reader tell the two parts apart at a glance.
6 Quick checklist for hand-notating
- Decide the direction before you draw the stem — check the note against the middle line.
- Below the line → up (right side). On/above → down (left side).
- Make the stem about one octave long.
- Chord? Let the note farthest from the middle line decide.
- Beamed group? Pick one direction for the whole beam.
- Two voices sharing a staff? Upper up, lower down — always.
Know the staff cold first
Stem direction is easy once you read the staff fluently. Drill your note reading in every clef — it's all free.
Practice note reading →Frequently asked questions
Which way do note stems go?
It depends on the note's position relative to the middle line of the staff. Below the middle line, the stem points up; on or above the middle line, it points down. The rule is the same in every clef.
Do stems go up or down on the middle line?
A note on the middle line can go either way, but the standard default is stem down. In a run of notes you may flip it to match its neighbors.
Which side of the notehead does the stem go on?
An up stem attaches to the right side of the notehead; a down stem attaches to the left side.
How do stems work for chords?
A chord uses one shared stem. The note farthest from the middle line decides the direction for the whole chord (ties go down).
What about beamed eighth notes?
The beamed group shares one stem direction, set by the note farthest from the middle line in the group — you don't flip stems note by note.
How long should a note stem be?
About one octave — roughly 3.5 staff spaces. Notes far above or below the staff get a longer stem that reaches back toward the middle line.