Hack Squat vs Leg Press: Which Is Better for Your Legs?

The leg press is the better pick for most people, especially beginners, anyone with a cranky lower back, and home gym owners, because it's easier to learn, takes the load off your spine and is far cheaper to own. The hack squat wins if your main goal is quad size and you already squat well, since standing upright and bending deep at the knee hammers the front of the thigh. If you have access to both, use them together: hack squat first for heavier work, leg press after for volume.

That's the short answer. The rest of this guide sets them side by side so you can see exactly where each one earns its place.

Hack squat vs leg press at a glance

	Hack squat	Leg press
Body position	Standing, back and shoulders against pads, sled travels with you	Seated or reclined, you push a sled or carriage away from you
Main muscles	Quads first, then glutes and adductors	Quads and glutes, with emphasis set by foot position
Quad bias	High; upright torso and deep knee bend	Moderate to high; low, narrow feet bias quads
Spinal load	Load rests on your shoulders, but the back is supported	Very little; load goes through your feet into a seated torso
Learning curve	Moderate; depth, foot placement and keeping the lower back on the pad take practice	Low; most people get it right on day one
How heavy you can go	Heavy, but less than the leg press on most machines	Usually the heaviest loads you will ever move with your legs
Commercial gym availability	Common in bigger gyms, missing in many budget ones	In almost every gym
Home availability	Mostly as a leg press and hack squat combo	Plate loaded and multi gym versions widely sold
Typical home cost	Combo machines from around £900	Compact plate loaded units from around £450

How they differ

Body position and where the load goes

On a hack squat you stand on an angled footplate with your back on a pad and shoulder pads on top. When you squat down, you and the carriage move together along the rails. The weight sits on your shoulders, so it travels down your spine, but the back pad holds your torso in place so you don't have to balance or brace the way you would under a barbell.

On a leg press you sit or recline with your back in a seat and your feet on a platform. You push the weight away from you; your torso never moves. The load enters through your feet and ends at the seat, so your spine carries very little of it. That's the main reason physios and coaches reach for the leg press when someone's back is sore.

Muscle emphasis

Both are knee-dominant leg exercises, so your quads do most of the work on each. The hack squat tends to bias the quads more because your torso stays upright and your knees travel well forward at the bottom. That puts the quads under a long stretch, which is why bodybuilders love it.

The leg press is more adjustable. A classic lab study measured muscle activity and knee forces during the squat and two leg press foot positions. A wide, high foot position on the platform produced more hamstring activity than a narrow, high one, and the squat produced more quad and hamstring activity than either leg press position (Escamilla et al., Medicine and Science in Sports and Exercise). In practice: feet low and narrow for quads, feet high and wide for glutes, hamstrings and adductors. Our leg press guide breaks down each foot position.

Stability and trunk work

A machine with a back pad takes your trunk out of the lift to a degree. Researchers at the University of Stirling compared the hack squat with the barbell back squat at the same relative loads. Lifters handled heavier weights on the hack squat, but their trunk muscles worked significantly harder in the back squat (Clark, Lambert and Hunter, Journal of Strength and Conditioning Research). The leg press goes further still: you're seated, so your core does even less.

That can work in your favour. Taking balance out lets you push your legs closer to failure safely, which is useful when size is the goal. Just don't expect either machine to build the bracing strength a free-weight squat does.

Carryover to the squat

If you're using one of these machines to get better at the barbell squat, specificity matters. In a 10 week trial, people who only squatted improved their squat strength more than people who only leg pressed, while a group that did both landed in the middle on most measures. Both free weights and machines improved functional outcomes (Rossi et al., Journal of Sports Medicine and Physical Fitness). The hack squat sits closer to a real squat pattern than the leg press, so it tends to carry over a little better, but nothing beats squatting if the squat is your goal.

We couldn't find a published study comparing the hack squat directly with the leg press for muscle growth. The differences above come from how each machine positions and loads your body, plus what the squat and leg press research tells us.

Who should pick which

Pick the leg press if you:

• Are new to lifting and want a leg exercise you can load safely from the first session.
• Have lower back pain or a history of disc issues and want the load off your spine.
• Train at home and want one leg machine on a sensible budget.
• Want to work your glutes and hamstrings alongside your quads by changing foot position.
• Like high-rep, close-to-failure sets where balance would otherwise be the limit.

Pick the hack squat if you:

• Mainly want bigger quads and already have decent squat technique.
• Want something closer to a squat pattern without the balance and bracing demand of a barbell.
• Have shoulders and a back that are happy with a supported load on top.
• Train in a commercial gym that has one, or can justify a combo machine at home.

Use both if you train legs twice a week and want variety, or if you want a heavy quad-focused lift plus a high-volume finisher.

Common mistakes on both machines

Letting the lower back peel off the pad. On the leg press, going too deep tips your pelvis and rounds your lower back off the seat. On the hack squat, the same thing happens at the very bottom. Find the depth where your lower back stays flat and set the safety stops just below it.

Locking the knees at the top. Snapping your knees straight under a heavy sled shifts the weight from muscle to joint. Stop just short of lockout and keep tension on the quads.

Heels lifting. If your heels rise, your feet are too low on the platform or your ankles are tight. Move your feet up a few centimetres until your whole foot stays planted.

Comparing numbers across machines. Sled weight, rail angle and friction vary hugely. On a 45 degree sled you only push against roughly 71 percent of the loaded weight, which is explained in our plate loaded leg press guide. Track progress on the same machine and ignore what the person next to you is pushing.

Rushing the descent. Both machines reward a controlled two to three second lowering phase. Dropping into the bottom and bouncing out puts the knees and lower back at risk and wastes the stretch on the quads.

For setup and step-by-step cues on the hack squat itself, see our full hack squat guide.

How to programme hack squats and leg press

Pick a plan that matches how often you train legs. These assume you train legs one or two times a week and take most sets to within one or two reps of failure.

One leg day a week:

• Hack squat: 3 to 4 sets of 6 to 10 reps, 2 to 3 minutes rest.
• Leg press: 3 sets of 10 to 15 reps, feet higher and wider, 90 seconds rest.
• Finish with hamstring curls and calf raises.

Two leg days a week:

• Day A: hack squat 4 sets of 6 to 8, then leg press 2 sets of 12 to 15.
• Day B: leg press 4 sets of 8 to 12 with a narrow, low foot position, then a hinge such as Romanian deadlifts.

Leg press only (home gym):

• 4 sets of 8 to 12 with feet shoulder-width, mid-platform.
• 2 sets of 15 to 20 with feet low and narrow for the quads.
• Rotate foot positions every 4 to 6 weeks so you're not training one angle forever.

Add load when you hit the top of the rep range on every set with clean depth. On a plate loaded machine, a single 2.5kg plate each side is plenty of jump. The NHS recommends strength work covering your major muscle groups, legs and hips included, on at least two days a week, so a twice-weekly split is a good target if you can manage it.

Hack squat or leg press for a home gym?

For most home lifters, a leg press is the one to buy. It's cheaper, smaller, easier to use alone and doesn't put load on your shoulders when nobody is around to help. A compact plate loaded unit is the usual starting point. The SPORTNOW leg press we cover in our plate loaded leg press guide lists a 70 x 50mm steel frame rated to 455kg, three backrest angles, four stop positions and a 185 x 120 x 140cm footprint. It was £449.99 and in stock when we checked on 2 November 2026.

Check the SPORTNOW leg press price on Amazon£449.99

If you want the hack squat too, a combo machine puts both on one frame. The BodyMax CF800 Leg Press/Hack Squat is listed with a 272kg weight capacity, a safety catch, plate storage pins on both sides and a 202 x 86 x 142cm (L x W x H) footprint. It was £899.00 and in stock when we checked on 2 November 2026. Measure your room first: you need extra space around the loading pegs, and a combo is longer than most compact leg presses.

Check the BodyMax CF800 leg press and hack squat price£899.00

Short on space or plates? A selectorised multi gym with a built-in leg press is the other route. Our SPORTSROYALS home gym review covers one with a sled-style leg press on a 68kg stack, though that listing showed as currently unavailable when we checked today and 68kg will feel light on the leg press for stronger lifters. For a wider look at what's worth owning, our guide to leg machines runs through every common option and which ones make sense at home.

Recommended reads

• Leg press: how to do it, foot placement and muscles worked
• Hack squat: technique, mistakes and sets and reps
• Plate loaded leg press: types, sled weight and buying guide
• Leg machines at the gym: every machine named and explained
• SPORTSROYALS home gym review