Smith Machine Squat

Anton YefanovUpdated September 6, 2026

The Smith machine squat runs the bar on a fixed vertical rail, so the lifter can concentrate on the descent and drive rather than on balancing a loaded bar. The bar sits at the base of the traps, the feet are set slightly ahead of it, and the hips and knees bend together until the thighs reach parallel. Quadriceps take the primary load with glutes, hamstrings, trunk, and calves supporting. A low bar position does not work well here because the rail is vertical while a low bar squat needs the bar to travel back over the midfoot.

How to do the Smith Machine Squat

Set the Smith bar just below shoulder height with the safety stops above knee level.
Step under the bar so it rests at the base of your traps and grip the bar evenly.
Place your feet slightly ahead of the bar at about shoulder width.
Rotate your wrists to unrack the bar and brace your trunk.
Push your hips back and bend your knees together until your thighs reach parallel.
Drive through the whole foot and extend your hips and knees to return to standing.

Muscles worked

Primary:: Quads
Secondary:: Glutes, Hamstrings, Core, and Calves

Why train it

Loads a squat pattern heavily with a much lower balance requirement.
Lets a lifter train to failure safely using the rotating safety catches.
Gives a clear, teachable squat pattern for beginners and machine-only programs.

Common mistakes

Setting the bar low on the back, which fights the vertical rail and strains the shoulders.
Placing the feet directly under the bar, which forces the knees forward and the torso down.
Letting the knees track inside the second toe as you drive out of the bottom.
Leaning on the fixed bar path and losing trunk bracing, which rounds the lower back.

Frequently asked questions

Are Smith machine squats as good as barbell squats?

For building your legs, they work well. The fixed bar path removes the need to balance, so you can focus on pushing with your legs. They do not train balance, core bracing and stabiliser muscles as much as a free barbell squat, and the numbers you lift are not directly comparable.

Where should your feet be on a Smith machine squat?

Slightly in front of the bar, so that at the bottom your knees stay over your feet. Feet further forward put more of the work on your glutes and take some of it off the knees. Feet directly under the bar feel more like a normal squat and work the quads more.

Are Smith machine squats bad for your knees?

Not for most people. Because the bar moves straight up and down, your feet position decides how much stress goes to your knees. If your knees ache, step your feet a little further forward. Keep your knees tracking over your toes.

How much does a Smith machine bar weigh?

It varies a lot between machines, from around 7 to 25 kg, and some have counterweights that make the bar feel lighter. Check the label on the machine, or ask the gym. It matters less than you think: compare your progress on the same machine over time.

What muscles does the Smith Machine Squat work?

The Smith Machine Squat trains the quads as the main target. Expect the glutes, hamstrings, core, and calves to take some of the load as well.

What equipment do I need for the Smith Machine Squat?

Only a machine. Nothing beyond that is required to run the movement the way it is described above.

Is the Smith Machine Squat suitable for beginners?

Yes. The Smith Machine Squat is rated beginner, and the machine holds the path for you, so there is little to get wrong once the seat and the pin are set.

Can I do the Smith Machine Squat at home?

Only if your home setup runs to a machine. Most do not, so this is usually a gym movement. The alternatives below cover the same muscles with kit you are more likely to have.

How many sets and reps of the Smith Machine Squat should I do?

Three to five sets of 5 to 10 reps. Rest two to three minutes: squats tire the whole body, and a rushed second set is where depth and bracing fall apart.

What are good alternatives to the Smith Machine Squat?

Band Squat, Bodyweight Box Squat, and Dumbbell Front Squat train the same primary muscles as the Smith Machine Squat. Pick whichever one suits the equipment in front of you.