For side-delt growth
For side-delt growth, machine lateral raise rates well ahead on our research criteria: easier to progress, more stretch.
Both are good choices that train the side delts the same way, so they swap freely. Rotating between them every few weeks is an easy way to vary your training.
The research score comes from these, scored by hand from the studies. Lifter scores appear once an exercise has 10 ratings. How scores work
Dumbbell Lateral Raise. Works, but tension drops off near the bottom of each rep.
Machine Lateral Raise. Isolates the side delt on a fixed path, and machines add weight in smaller steps than dumbbells.
For side-delt growth, machine lateral raise rates well ahead on our research criteria: easier to progress, more stretch. Both are good choices that train the side delts the same way, so they swap freely. Rotating between them every few weeks is an easy way to vary your training.
About the same: both are easy to learn.
Dumbbell lateral raise needs dumbbells, so a home gym covers it. Machine lateral raise needs a machine, so for most people it’s a gym exercise.
About the same: both rate Excellent for joint and recovery cost in our research rubric.