17 Types of Squats: Muscles, Difficulty and How to Choose

Quick Answer: There are over a dozen squat variations, and each one shifts the emphasis to different muscles depending on your stance, bar position, and equipment. Bodyweight squats build the foundation. Dumbbell and kettlebell squats add load without a rack. Barbell squats allow the heaviest loading. Machine squats reduce balance demands. The right variation depends on your goal, equipment, and experience level.

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Squats are not one exercise. They are a family of movements that share the same basic pattern: bend at the hips and knees, lower your body, stand back up. But the stance you take, where the weight sits, and what equipment you use change which muscles do the most work, how much load you can handle, and how much mobility the movement demands.

That distinction matters because the wrong squat variation for your current level or goal either limits your progress or creates problems you could have avoided. A beginner forcing a barbell back squat with limited ankle mobility is not training effectively. Neither is an intermediate lifter doing only bodyweight squats and wondering why their legs have stopped growing.

Every Squat Variation at a Glance

Variation	Equipment	Primary Muscles	Difficulty	Best For
Air squat	None	Quads, glutes, core	Beginner	Foundation, warm-up, conditioning
Sumo squat (bodyweight)	None	Adductors, glutes, quads	Beginner	Inner thigh emphasis, limited ankle mobility
Cossack squat	None	Adductors, quads, glutes	Intermediate	Hip mobility, lateral strength
Jump squat	None	Quads, glutes, calves	Intermediate	Explosive power, conditioning
Pistol squat	None	Quads, glutes per leg	Advanced	Single-leg strength, balance
Goblet squat	DB/KB	Quads, core, glutes	Beginner	Learning depth, upright torso
Dumbbell sumo squat	DB	Adductors, glutes, quads	Beginner	At-home glute and inner thigh work
Bulgarian split squat	DB/BB	Quads, glutes per leg	Intermediate	Fixing imbalances, single-leg strength
Back squat (high bar)	Barbell	Quads, glutes, hamstrings	Intermediate	Overall strength, quad emphasis
Back squat (low bar)	Barbell	Glutes, hamstrings, quads	Intermediate	Heavy loading, posterior chain
Front squat	Barbell	Quads, core, upper back	Intermediate	Quad development, upright torso
Overhead squat	Barbell	Full body, shoulders	Advanced	Mobility, Olympic lifting prep
Zercher squat	Barbell	Quads, core, upper back	Advanced	Core bracing, real-world strength
Box squat	Barbell/BW	Glutes, hamstrings, quads	Beginner-Int	Depth control, force from a dead stop
Hack squat	Machine	Quads	Beginner	Quad isolation, low back-friendly
Smith machine squat	Machine	Quads or glutes (stance-dependent)	Beginner	Solo training, foot position variety
Belt squat	Machine	Quads, glutes, hamstrings	Beginner-Int	Zero spinal load, back-friendly volume

This table covers the variations most relevant to beginner-to-advanced lifters. Specialty squats like the Anderson squat, safety bar squat, or sissy squat exist for specific training purposes but are beyond the scope of a general overview.

Bodyweight Squat Variations

Air Squat

The air squat is the starting point for every other squat on this list. No equipment, no external load, just the movement pattern. It trains the quads, glutes, hamstrings, and core simultaneously, and it exposes mobility limitations that heavier squats will punish later.

If you cannot perform a full-depth air squat with your heels flat and your chest upright, loaded squats will reinforce the problem instead of building strength. For a full breakdown of form, common mistakes, and when to add weight, see the complete air squat guide.

Sumo Squat (Bodyweight)

Widening your stance past shoulder-width and turning your toes out shifts the emphasis from the quads toward the adductors and glutes. The wider stance also reduces the ankle dorsiflexion demand, making this a more comfortable option for people who struggle with standard squat depth.

The bodyweight sumo squat is the unloaded version. Once form is consistent, loading it with a dumbbell held between the legs is the natural next step. That progression is covered in the dumbbell sumo squat guide.

Cossack Squat

A lateral squat where you shift your weight to one side, squatting deeply on that leg while the other stays straight. The Cossack squat challenges hip mobility, adductor flexibility, and single-leg stability in a plane of motion that forward-facing squats never reach.

Most people can’t reach full depth on the first attempt, and that’s the point. It reveals tightness and imbalances between sides. Start with partial depth and progress over weeks.

Jump Squat

A bodyweight squat with an explosive jump at the top. Jump squats are a plyometric exercise that trains fast-twitch muscle fibers and develops lower-body power that carries over to sprinting, cutting, and vertical jumping. They also work as a conditioning tool because the explosive output drives heart rate up quickly.

Land softly with bent knees and transition straight into the next rep. If your form breaks on landing, you’re either fatigued or jumping too high. Control matters more than height.

Pistol Squat

A single-leg squat to full depth with the other leg extended straight in front of you. No support, no counterbalance. The pistol squat demands quad strength, ankle mobility, and balance all working at once, which is why most people need months of progressive single-leg work before a clean rep is realistic. Box-assisted pistols and goblet-style counterbalance reps are the standard progressions.

The payoff is real: pistol squats expose strength imbalances between legs that bilateral squats hide entirely. They belong in advanced programming, not beginner routines.

Dumbbell and Kettlebell Squat Variations

Goblet Squat

Hold a dumbbell or kettlebell at your chest and squat. The front-loaded weight acts as a counterbalance that naturally pulls your torso upright, which makes hitting proper depth easier than almost any other squat variation. For beginners, the goblet squat is the best teaching tool for squat mechanics because the weight helps you find the right position rather than fighting against it.

Loaded heavier than most people attempt, the goblet squat is a legitimate strength exercise, not just a warm-up drill.

Dumbbell Sumo Squat

The loaded version of the bodyweight sumo squat. Holding a dumbbell vertically between the legs with a wide stance targets the adductors, glutes, and quads. The upright torso position keeps lower-back stress low, making this a strong option for home training or for lifters who want glute and inner-thigh work without a barbell.

The full form guide, muscles worked, and programming are covered in the dumbbell sumo squat article.

Bulgarian Split Squat

Elevate your rear foot on a bench, step the front foot forward, and squat on the front leg. Nearly all of the load falls on the working leg, which exposes strength imbalances that bilateral squats hide. Research by Speirs et al. (2016) published in the Journal of Strength and Conditioning Research found that unilateral squat training produced comparable strength and sprint improvements to bilateral training in athletes, supporting the Bulgarian split squat as a primary lower-body exercise rather than just an accessory. The rear hip flexor is also stretched under load throughout the set, so hip mobility improves alongside strength.

Loading options are flexible. Dumbbells at the sides are easiest to manage, but a barbell across the back or a kettlebell at the chest both work. The leg does the same job regardless of where the weight sits.

Barbell Squat Variations

Back Squat

The barbell back squat is the most commonly programmed squat in strength training for good reason: it allows you to move the heaviest loads across the largest muscle groups in a single movement. Bar position creates two distinct sub-variations. High bar placement on the upper traps keeps the torso more upright and shifts emphasis toward the quads. Low bar placement on the rear delts requires more forward lean and loads the glutes, hamstrings, and posterior chain more heavily. The differences between high bar and low bar squat run deeper than bar position alone.

Neither position is universally better. Your build, goals, and what your body tolerates determine which one makes sense.

Front Squat

The barbell moves from behind the neck to the front of the shoulders, resting across the front delts. That single change forces a more upright torso, shifts the primary demand to the quads and core, and significantly reduces lower-back loading compared to the back squat. The trade-off is that the front rack position requires wrist and shoulder mobility that many lifters need to develop.

For a detailed comparison of when to use a front squat versus a back squat, including the muscle emphasis differences, see the front squat vs back squat guide.

Overhead Squat

Hold a barbell locked out overhead with a wide grip and squat to depth. The overhead squat is less about leg strength and more about total-body stability, shoulder mobility, and thoracic extension. It is a key position in Olympic weightlifting (the bottom of a snatch) and one of the most revealing movement assessments available, since any mobility restriction becomes immediately obvious.

Most people should not load this variation until they can hold a PVC pipe or empty barbell overhead in a full squat position without their chest collapsing or heels lifting.

Zercher Squat

The barbell sits in the crooks of your elbows instead of on your back or shoulders. This unusual loading position forces you to brace hard through the core and upper back to stay upright. Zercher squats are uncomfortable by design, but they develop real-world carrying strength and expose weaknesses in posture and core stability that other squat styles can mask.

Consider using a barbell pad or towel across the bar until you’re accustomed to the position.

Box Squat

Squat back onto a box set at parallel height, pause briefly, then drive up. The pause eliminates the elastic rebound that normally helps you out of the bottom, so your muscles must generate force from a near-dead stop. Box squats also teach you to sit the hips back rather than letting the knees drift forward, which makes them useful for both learning squat mechanics and building explosive strength.

Machine Squat Variations

Hack Squat

The hack squat machine supports your back against a pad while your feet press into a platform. Lower-back involvement drops close to zero, which means you can push to genuine quad fatigue without your spine becoming the limiting factor. Foot placement on the platform changes the emphasis: lower feet increase quad activation, higher feet shift load toward glutes and hamstrings.

Smith Machine Squat

The barbell runs on a fixed track, so balancing it is not a concern. That freed-up stability demand lets you experiment with foot positions in ways a free barbell doesn’t allow. Feet directly under the bar targets quads. Feet walked forward shifts emphasis to the glutes. The fixed path also removes the need for a spotter, making this a practical option for people who train alone.

A 2009 EMG study by Schwanbeck et al. in the Journal of Strength and Conditioning Research found that free-weight squats produced 43% higher average muscle activation across all muscles compared to Smith machine squats. That’s a real difference. But for beginners learning depth and control, or for experienced lifters pushing close to failure without a spotter, the Smith machine earns its place as a training tool rather than a replacement for free-weight squats.

Belt Squat

The belt squat loads your lower body through a belt around the hips instead of a bar on your back. That removes spinal compression entirely, which makes it one of the few squat variations that trains the quads, glutes, and hamstrings hard without loading the spine at all. For lifters managing back discomfort, or for anyone who wants additional leg volume without the systemic fatigue of another barbell squat, the belt squat fills a gap that no other variation covers.

The trade-off is access. Belt squat machines are not available in every gym. If yours has one, it works well as a finisher after your primary squat movement.

Which Squat Variation Should You Start With?

Not every variation is appropriate for every level. Jumping straight to a barbell back squat without mastering the basic movement pattern is how form errors get built in early and reinforced over time.

Beginner (0 to 6 months): Air squat → Goblet squat → Box squat or Smith machine squat. Learn the pattern unloaded, add front-loaded weight to reinforce depth and positioning, then introduce back-loading in a controlled environment.

Intermediate (6 months to 2 years): Barbell back squat → Front squat → Bulgarian split squat. You have the movement foundation. Now load it bilaterally, add a quad-dominant barbell variation, and introduce unilateral work to address imbalances.

Advanced (2+ years): Overhead squat, Zercher squat, Cossack squat, pistol squat. These variations demand mobility, stability, and strength simultaneously. They expose weaknesses that standard squats don’t reveal.

How to Pick the Right Squat for Your Goal?

Your Goal	Best Variations
Build quad size	Front squat, hack squat, heel-elevated goblet squat
Build glutes and posterior chain	Sumo squat, Bulgarian split squat, low-bar back squat
Fix strength imbalances between legs	Bulgarian split squat, Cossack squat
Train at home with no equipment	Air squat, sumo squat, jump squat, Cossack squat
Train with dumbbells only	Goblet squat, dumbbell sumo squat, Bulgarian split squat
Reduce knee discomfort during squats	Box squat, goblet squat (see: form errors that cause knee stress during squats)
Reduce lower-back stress during squats	Belt squat, hack squat, goblet squat
Build explosive power	Jump squat, box squat
Train alone without a spotter	Smith machine squat, hack squat, goblet squat
Improve mobility and movement quality	Overhead squat, Cossack squat, goblet squat hold

How Many Squat Variations Should You Use in One Program?

Two to three. One primary bilateral squat (back squat or front squat), one unilateral variation (Bulgarian split squat), and one accessory or machine movement (hack squat, goblet squat, or Smith machine squat) covers bilateral strength, single-leg development, and targeted muscle work without redundancy.

Rotate your secondary and accessory variations every four to six weeks to avoid staleness while keeping your primary squat consistent for tracking progress. Adding variety without a reason is not programming, and it often slows progress by preventing adaptation to any single stimulus.

Frequently Asked Questions

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Your Next Step

Pick one squat from each category: one bodyweight or light variation for warm-up, one barbell or heavy variation as your main lift, and one accessory for targeted work. That combination covers the full spectrum without redundancy. If you’re unsure where to start, begin with the air squat and work through the progression path above. Use the comparison table to adjust as your goals change. Check your average squat weight to benchmark where you currently stand.