Hack Squat

A beginner compound strength exercise that works the quads, using a machine.

Hack Squat — Starting position Starting position
Hack Squat — End position End position
Difficulty Beginner
Type Strength
Equipment Machines
Primary Muscle Quads
AI Rep Counting Log manually

How to Do Hack Squat

  1. Place the back of your torso against the back pad of the machine and hook your shoulders under the shoulder pads provided.
  2. Position your legs in the platform using a shoulder width medium stance with the toes slightly pointed out. Tip: Keep your head up at all times and also maintain the back on the pad at all times.
  3. Place your arms on the side handles of the machine and disengage the safety bars (which on most designs is done by moving the side handles from a facing front position to a diagonal position).
  4. Now straighten your legs without locking the knees. This will be your starting position. (Note: For the purposes of this discussion we will use the medium stance described above which targets overall development; however you can choose any of the three stances described in the foot positioning section).
  5. Begin to slowly lower the unit by bending the knees as you maintain a straight posture with the head up (back on the pad at all times). Continue down until the angle between the upper leg and the calves becomes slightly less than 90-degrees (which is the point in which the upper legs are below parallel to the floor). Inhale as you perform this portion of the movement. Tip: If you performed the exercise correctly, the front of the knees should make an imaginary straight line with the toes that is perpendicular to the front. If your knees are past that imaginary line (if they are past your toes) then you are placing undue stress on the knee and the exercise has been performed incorrectly.
  6. Begin to raise the unit as you exhale by pushing the floor with mainly with the heel of your foot as you straighten the legs again and go back to the starting position.
  7. Repeat for the recommended amount of repetitions.

Muscles Worked

Front
Back

Primary

Where Hack Squat does most of its work.

Secondary

Assisting and stabilising muscles.

Alternatives to Hack Squat

10 movements that train the same primary muscle, closest substitutes first — same kind of training, then variations of the movement itself, then a similar difficulty.

  1. 1 Barbell Hack Squat

    Barbell Hack Squat

    An intermediate compound strength exercise that works the quads, using a barbell.

    intermediate Barbell
  2. 2 Barbell Squat

    Barbell Squat

    A beginner compound strength exercise that works the quads, using a barbell.

    beginner Barbell
  3. 3 Dumbbell Squat

    Dumbbell Squat

    A beginner compound strength exercise that works the quads, using dumbbells.

    beginner Dumbbells
  4. 4 Goblet Squat

    Goblet Squat

    A beginner compound strength exercise that works the quads, using a kettlebell.

    beginner Kettlebell
  5. 5 Plie Dumbbell Squat

    Plie Dumbbell Squat

    A beginner compound strength exercise that works the quads, using dumbbells.

    beginner Dumbbells
  6. 6 Barbell Side Split Squat

    Barbell Side Split Squat

    A beginner compound strength exercise that works the quads, using a barbell.

    beginner Barbell
  7. 7 Single-Leg High Box Squat

    Single-Leg High Box Squat

    A beginner compound strength exercise that works the quads.

    beginner Not specified
  8. 8 Split Squat with Dumbbells

    Split Squat with Dumbbells

    A beginner compound strength exercise that works the quads, using dumbbells.

    beginner Dumbbells
  9. 9 Chair Squat

    Chair Squat

    A beginner compound strength exercise that works the quads, using a machine.

    beginner Machines
  10. 10 Smith Machine Squat

    Smith Machine Squat

    A beginner compound strength exercise that works the quads, using a machine.

    beginner Machines

Frequently Asked Questions

What muscles do hack squat work?

Hack Squat primarily works the quads. The calves, glutes and hamstrings assist as secondary muscles.

What equipment do I need for hack squat?

Hack Squat uses machines.

Hack Squat: is it suitable for beginners?

Yes. Hack Squat is rated beginner. Movements you can learn in a session, with a low skill floor and a forgiving failure mode.

What can I do instead of hack squat?

Barbell Hack Squat, Barbell Squat, Dumbbell Squat train the same primary muscles and are listed with 7 more alternatives above.

Can Fitnit count my hack squat reps automatically?

Not automatically yet. Fitnit's AI rep counting covers push-ups, squats, dumbbell curls, crunches and pull-ups today; hack squat can be logged manually in the app, and tracked movements are added over time.

Photographs and step-by-step instructions from free-exercise-db, a public-domain exercise dataset. Muscle mapping and alternatives by Fitnit.

Track Your Hack Squat with AI

Fitnit automatically tracks push-ups, crunches, squats, pull-ups, and curls with advanced body tracking technology — and you can manually input any other workout too. Start free — Pro is $8.99/month.