Kettlebell Swing Form: How to Swing with Your Hips, Not Your Arms
Good kettlebell swing form means a hip hinge, not a squat: your hips drive back, your spine stays neutral, and a powerful hip snap — not your arms — floats the bell to about chest height. Formfix checks this from a single iPhone video and returns a 0–100 score with the #1 thing to fix in under 15 seconds.
The swing is one of the best conditioning moves there is, and one of the easiest to do badly once fatigue sets in. This page covers what a good swing looks like, the mistakes that matter most, and how to film your set.
Download Formfix on the App StoreWhat good kettlebell swing form looks like
Hinge, don't squat
Hips travel back, shins stay close to vertical, knees bend only slightly.
High hike pass
On the backswing the bell passes high between your thighs, close to the groin — not down by your knees.
Neutral spine
Back flat from tailbone to head, with your gaze a few feet ahead on the floor at the bottom.
Explosive hip snap
Glutes squeeze hard and hips lock out — the bell rises because of the hips.
Arms as ropes
Arms stay long and relaxed; they guide the bell, they don't lift it.
Tall plank at the top
Standing straight with glutes and abs tight, no leaning back.
Most common mistakes and how to fix them
Squatting the swing
Why it happens: Knees bend too much and hips drop, turning a hinge into a squat.
Fix it: Cue "push your hips back to a wall behind you." Practice with a wall a foot behind your heels; touch it with your glutes on each rep.
Lifting with the arms (front raise)
Why it happens: Weak hip drive gets made up with the shoulders.
Fix it: Cue "hips throw the bell, arms just hold on." Use a heavier bell — it's hard to front-raise.
Leaning back at the top
Why it happens: Overextending the lower back instead of finishing with the glutes.
Fix it: Cue "stand tall like a plank." Squeeze glutes and brace abs at lockout.
Rounding the back
Why it happens: Reaching for the bell or letting it drag you down on the backswing.
Fix it: Cue "proud chest, flat back." Start each set with a deliberate hike pass from a hinge.
Low, loose backswing
Why it happens: Letting the bell swing down by the knees pulls you forward.
Fix it: Cue "attack the zipper." Keep the bell high and tight between the legs.
Craning the neck up
Why it happens: Looking straight ahead at the bottom of the swing.
Fix it: Let your gaze follow your torso — eyes on the floor a few feet ahead at the bottom.
How to film it for analysis
Camera angle
Side-on at hip height. This shows the hinge, spine position and how high the bell floats.
Distance
8–10 feet away so your full body and the bell's whole arc stay in frame.
Framing
Keep the phone still and film 5–10 reps, including the last few of the set, where form usually breaks down.
FAQ
Is the kettlebell swing a squat or a hinge?
A hinge. Your hips move back and forward while your knees bend only slightly — think deadlift, not squat.
How high should the kettlebell go?
In a standard (Russian-style) swing, about chest height, driven by the hips alone. If you need your arms to get it there, the bell is too light or your hip drive is weak.
Why does my lower back hurt after kettlebell swings?
Usually from rounding at the bottom or leaning back at the top. Film from the side to check both.
Can AI check my kettlebell swing form?
Yes — computer vision tracks your hips, spine and arms through each rep. Upload a clip to Formfix for a 0–100 score and the #1 fix in under 15 seconds.
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