HYROX Wall Ball Depth Checker — No-Rep Video Analysis

HYROX Wall Ball Depth Checker

Free HYROX wall ball no-rep check: every rep scored for hips-below-parallel depth from your clip, with an annotated replay. The clip stays on your device.

Your video never leaves your device

How to film it so the call is honest
  • Side-on, not front or back
  • Full body in frame
  • Phone at hip height, about 3 m away

Head-to-toe matters: the tool calibrates against your standing height, and loses that reference if your feet or head leave the frame.

Front or back angles cannot be scored

Independent tool. Not affiliated with HYROX. It checks hip-versus-knee depth only, not an official judging call. Not medical or training advice.

Private by design. All analysis runs in your browser. Your video is never uploaded or stored.

What it checks, and how a rep is scored

The checker does one thing, and does it well: it decides whether your hip drops below your knee on every rep — the depth standard HYROX judges apply under Rulebook 8.8. It walks the clip frame by frame at up to 24 fps, so a fast rep at the bottom is never skipped between frames, finds the lowest point of each squat, and marks that rep counted, grey zone, or no rep.

That is a narrower question than 'was it a good rep', and deliberately so. A throw can hit the target and still be waved off because the squat was shallow — depth is the miss a target-focused eye skips, and the one no-reps pile up on once your legs are cooked.

Every rep lands in one of three buckets:

  • Counted — the hip reached parallel or dropped past it.
  • Grey zone — up to about 5% short of parallel, with the hip just above the line.
    • These count as valid, on purpose: a real judge gives a borderline rep the benefit of the doubt, and so does the tool.
  • No rep — the hip stayed above the knee by more than the grey margin.
HYROX wall ball rep at the top: the athlete stands tall and the tracked hip point sits well above the yellow parallel line, with the leg chain drawn in red.
Standing — the hip point sits above the yellow parallel line, so the leg chain is red. Red means "not at depth yet", not an error.
Descending into a HYROX wall ball squat with the ball at the chest; the tracked hip point has not yet crossed the yellow parallel line.
On the way down — the hip still has not crossed the line, so it stays red.
Bottom of a HYROX wall ball rep: the hip point is below the yellow parallel line, the leg chain turns green, and the tool calls REP 3 COUNTED at 3.9% below parallel.
At the bottom — 3.9% below parallel, and the rep is called COUNTED. Green is the depth standard met.

Each rep also shows a depth figure — how far past parallel you reached, as a percentage — so a 'grey' call is a number you can see, not a guess. Underneath, pose estimation (MediaPipe, 33 body landmarks) supplies the hip and knee positions the maths runs on; the judgement itself is plain geometry — the same hip-below-knee test a human judge makes by eye. It's the same depth standard applied at every HYROX race on the calendar.

Where to trust it, and where to trust your eyes

Treat it as a sharp second opinion, not an official verdict. The call is only as clean as what the camera saw: a slightly high or angled camera compresses depth and can read a good rep as shallow, and loose shorts over the knee blur the exact line. When part of your body is hidden from the lens, the tool marks that rep low confidence rather than force a call it cannot back up — so a borderline grey rep filmed off-angle is a cue to re-film side-on, not a reason to argue with a judge.

Frequently Asked Questions

How deep does a HYROX wall ball rep need to be?
Your hip has to drop below your knee at the bottom of the squat — that is the depth standard HYROX judges apply under Rulebook 8.8, checked rep by rep. Hitting the target line does not rescue a shallow squat: if the hip stays high, the rep is a no-rep no matter how clean the throw.
How accurate is the depth check?
It is a sharp guide, not an official judge. The tool tracks your hip and knee frame by frame and flags any rep where the hip does not clear the knee, but camera angle and loose clothing shift the read — so treat borderline grey-zone reps as close calls, and re-film side-on if a verdict looks off.
What does the grey zone mean?
The grey zone is any rep that finishes within about 5% short of parallel — the hip stopped just above the line — and it counts as valid. That mirrors how a real judge treats a borderline rep: the benefit of the doubt goes to the athlete. Only reps that clearly stay above the knee are called no-rep.
What angle should I film from?
Film side-on, with your full body in frame and the phone at about hip height, roughly 3 metres away. A front or back angle hides the hip-versus-knee line the whole check depends on and cannot be scored — the tool flags it as a bad view rather than guess.
Is my video uploaded anywhere?
No. Everything runs in your browser — the clip is read straight from your device, analysed locally, and never uploaded or stored on any server. The only download is the pose model itself, once, the first time you run it; your footage stays with you.
Can I check my depth live with the camera?
Yes — live camera mode is available as a beta, giving you a real-time depth read and rep count from your phone or webcam. It is handy for grooving depth during training, though the frame-by-frame video analysis is steadier for a verdict you want to trust. Live mode does not export a result card.
What is a no-rep in HYROX wall balls?
A no-rep is a rep the judge does not count toward your total. On wall balls the usual cause is depth: the hip did not drop below the knee at the bottom of the squat, which is the standard judges apply under Rulebook 8.8. The station is scored as a fixed number of reps, so a no-rep is simply a rep you still have to do — it adds effort without adding to your count. Because a shallow squat can look convincing from the front, depth is the miss that quietly costs the most, and it is exactly what this checker measures rep by rep. There is no time penalty for a no-rep: HYROX dropped the old 15-seconds-per-missing-rep rule in the 26/27 rulebook, so the only cost is doing the rep again. Judges give no warnings before making the call, and leaving the station before you have 100 valid reps is a disqualification rather than a time penalty.
How many wall balls are in a HYROX race, and do the standards differ by division?
In every singles division — Open and Pro, women and men — the station is 100 reps, and that count does not change with division. What changes with division is the ball and the target line, not the number of reps: Open women throw a 4 kg ball to 2.70 m, Open men 6 kg to 3.00 m, Pro women 6 kg to 2.70 m, and Pro men 9 kg to 3.00 m. In Doubles the reps are split between the two partners rather than doubled, and Mixed Doubles uses the men's Open column for both partners, so both throw the 6 kg ball. Relay runs Open loads only — there is no Pro relay division.
What else can cost you at the wall ball station?
Powdered chalk at the wall ball station carries a 2-minute penalty — the one that catches people out, since chalk is unremarkable almost everywhere else in a gym. Every other risk at this station is depth. Hitting the target does not rescue a squat that stopped above parallel, judges give no warning before calling a no-rep, and leaving before you have 100 valid reps is a disqualification rather than a time penalty. Filming one set side-on is the fastest way to see which reps would have been taken back.
References 1 peer-reviewed sources
  1. HYROX World GmbH (2026). HYROX Singles Rulebook 26/27 §8.8 Wall Balls. hyrox.com.

Each calculation in this tool traces to peer-reviewed research. Click any DOI to read the source paper.