🏋 Hack Squat Weight Calculator
Estimate your ideal hack squat load based on strength level, body weight & training goal
| Level | Male (% BW) | Female (% BW) | Example Male 185 lb | Example Female 135 lb |
|---|---|---|---|---|
| Beginner | 50% | 35% | 93 lb | 47 lb |
| Novice | 80% | 55% | 148 lb | 74 lb |
| Intermediate | 125% | 80% | 231 lb | 108 lb |
| Advanced | 175% | 115% | 324 lb | 155 lb |
| Elite | 250% | 160% | 463 lb | 216 lb |
| Reps | % of 1RM | Goal | Sets | Rest |
|---|---|---|---|---|
| 1 | 100% | Max Strength Test | 1–3 | 3–5 min |
| 2 | 97% | Max Strength | 3–5 | 3–5 min |
| 3 | 94% | Max Strength | 3–5 | 3–5 min |
| 5 | 87% | Strength | 4–6 | 2–3 min |
| 6 | 85% | Strength / Power | 3–5 | 2–3 min |
| 8 | 80% | Hypertrophy | 3–4 | 90s–2 min |
| 10 | 75% | Hypertrophy | 3–4 | 90s–2 min |
| 12 | 70% | Hypertrophy | 3–4 | 60s–90s |
| 15 | 65% | Endurance / Tone | 2–3 | 45s–60s |
| 20 | 60% | Metabolic / Fat Loss | 2–3 | 30s–45s |
| Metric | Hack Squat Machine | Barbell Back Squat |
|---|---|---|
| Primary Muscles | Quads (dominant), Glutes | Quads, Glutes, Hamstrings |
| Core Demand | Low (machine guided) | Very High (stabilization) |
| Load Multiplier vs Squat | ~0.7–0.85x | 1.0x (baseline) |
| Lower Back Stress | Low | Moderate–High |
| Knee Stress at High Load | Moderate | Moderate |
| Beginner Friendly | Yes | Requires coaching |
| Set | % of Working Weight | Reps | Rest | Purpose |
|---|---|---|---|---|
| Warm-Up 1 | 40% | 15 | 60s | Prime joints & blood flow |
| Warm-Up 2 | 60% | 10 | 60–90s | Groove movement pattern |
| Warm-Up 3 | 80% | 5 | 90s–2min | CNS activation |
| Working Set 1 | 100% | Target | 2–3 min | Full training stimulus |
The Hack Squat sits a bit between the barbell squat and the leg press. The upright body position and the heavy load is like that of the barbell squat, but the stability of the machine is more like the leg press. Usually one does it on a Hack Squat machine, where the lifter stands on a plate and the heavy pads rest on the shoulders.
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The back of the torso presses against the back cushion and the shoulder hooks go under the shoulder pads.
Hack Squat: A Simple Machine to Build Strong Thighs
The Hack Squat machine is a kind of squat that helps to build muscles in the legs. It works well for building strength in the lower body, especially in the quadriceps. The support for the back and the guided move makes it good for beginners, that want a gentler option than the classic barbell squat.
The Hack Squat mainly targets the growth of quadriceps. They isolate the quadriceps through body position, that reduces the help of glutes or hamstrings. The machine removes the upper body from the exercise, so it stresses the quadriceps more than the glutes, while it protects the back.
Hack Squat machines really target the vastus lateralis more than some other kinds of squats. Quadriceps have four different muscle heads, so it matters to work them from various angles.
Because the Hack Squat gives extra stability to the hips, they use a different movement pattern than normal squats. During normal squats you move the hips backwards and bend the knees at the same time, the Hack Squat changes that. The position of the feet also matters.
If one places feet higher on the platform, the front part of the thighs works more. Even styles like the sissy squat can be copied on the machine.
For those that have problems with the back or feel limited core strength during back or front squats, the Hack Squat offers an excellent way to really focus on quadriceps. Like this the quadriceps become the main limiting factor, which helps more exactly target the muscles and reach bigger growth. The Hack Squat works well four building quadriceps, and stronger quadriceps are useful for long-term squat gains.
Even so there is risk. The knee joint can get overloaded in the bottom spot of the move, especially if one takes too heavy weight too quickly. A slower lowering with a pause at the bottom and lighter load is a much safer method.
Full range with heavy weight often causes harm to knee ligaments. Some people find that the Hack Squat puts more pressure on the knees than free barbell squats.
The barbell Hack Squat is another option. It means to hold a barbell behind the legs, just under the buttocks, and lower down almost like sitting in a chair. It looks and feels a bit weird, so it is less popular.
When a Hack Squat machine is not there, good replacements include front squats, Bulgarian split squats, lunges and landmine Hack Squats. Also a Smith machine works forHack Squats, but good shoe grip is needed, so that the feet do not slip forward.
