🏋 Hack Squat to Squat Calculator
Convert your hack squat machine weight to an estimated barbell back squat equivalent
| Hack Squat Weight | Est. Barbell Squat (lbs) | Est. Barbell Squat (kg) | Ratio Used | Level |
|---|---|---|---|---|
| 100 lbs / 45 kg | ~75 lbs | ~34 kg | 0.75x | Beginner |
| 150 lbs / 68 kg | ~115 lbs | ~52 kg | 0.77x | Beginner+ |
| 200 lbs / 91 kg | ~155 lbs | ~70 kg | 0.78x | Intermediate |
| 250 lbs / 113 kg | ~197 lbs | ~89 kg | 0.79x | Intermediate |
| 300 lbs / 136 kg | ~240 lbs | ~109 kg | 0.80x | Advanced |
| 350 lbs / 159 kg | ~283 lbs | ~128 kg | 0.81x | Advanced |
| 400 lbs / 181 kg | ~328 lbs | ~149 kg | 0.82x | Elite |
| 450 lbs / 204 kg | ~374 lbs | ~170 kg | 0.83x | Elite |
| Foot Position | Primary Muscles | Carry-Over to Squat | Ratio Adjustment |
|---|---|---|---|
| Low (toe-forward) | Quads dominant | High quad carry-over | +2–3% |
| Mid (shoulder-width) | Quads + Glutes balanced | Most balanced carry-over | Baseline |
| High (heels raised) | Glutes + Hamstrings | Lower direct carry-over | –3–5% |
| Wide stance | Glutes + Adductors | Sumo squat carry-over | –2–4% |
| Angle | True Load vs Loaded Weight | Quad Demand | Back Squat Similarity |
|---|---|---|---|
| 30° (shallow) | ~52% of plate weight | Moderate | Lower |
| 45° (standard) | ~71% of plate weight | High | Moderate |
| 60° (steep) | ~87% of plate weight | Very High | Higher |
| 70° (near vertical) | ~94% of plate weight | Extremely High | Closest |
The Hack Squat is a kind of Squat that helps build the muscles of the legs. It works the same parts of body as front and back Squat, however the slope puts less load on the back through tension. Most of all it targets the glutes, quadriceps and back leg muscles.
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Regular Squat use much more muscles overall.
How the Hack Squat Helps Your Legs
The machine for Hack Squat commonly has a 45-degree sloped support, cushions for shoulders that spread the weight, and a floor for placing the feet. That gives a well controlled setup for heavy movements of Squat. It avoids many problems with balance and stability that come with Squat using free weights.
So, one can fully focus on pushing the biggest weight through the legs.
To use the machine, one lays the back of the trunk against the pad, while the shoulders find support under the pads. Hack Squat works well for growing the quadriceps. It almost matches an isolating exercise for them.
The position barely uses the glutes or hamstrings, also because of the direct position of the feet. Quadriceps have four different heads, and the machine really strongly works teh vastus lateralis compared to some other exercises.
Thanks to extra support for the hips, Hack Squat uses a different movement pattern than usual Squat. During normal Squat, the hips go backwards together with bending of the knees. The machine sets the body in a fixed range, so it limits the helper muscles and keeps the attention on legs and glutes.
With the support and guided move, it becomes a good option for newcomers and an easier replacement four traditional Squat with a bar.
Barbell Hack Squat offers another version. One keeps the bar behind the body, just under the glutes, with an upper grip. Then the move starts by lowering like sitting on a chair.
That version few like, because it seems and feels awkward. The position of the bar behind really presses the quadriceps, which forces them to grow. When the bar touches the hamstrings, a bit of push with control can add even more tension on the quadriceps.
Hack Squat is also useful during recovery. Lightweight sets with many reps of pause Squat and Hack Squat, without pain, help to restart the training. Bent Hack Squat well helped folks after knee surgery.
Some positions of feet are like sissy Squat, while placing feet higher works the front part of the thighs instead. One can use a smith machine for Hack Squat, but good shoe grip matters, so that feet do not slip forward. Landmine HackSquat deserves a look as another option.
