
Fifteen world records, one centimeter at a time. This is the equation underneath it — and it works on your vault too.
Armand Duplantis · 6.31 m world record · Uppsala, 12 March 2026 · video used with permission
Every piece is a height in metres or feet. Add them up and you get the bar you can clear.
4.70 m to 6.31 m — six real vaults, 5.9 cm RMS. Two World Championship cohorts, the Olympic final mean, a WC winner, Duplantis, and one measured club vault. Every one has a real measured run speed and a real grip height, and the worst row is 10.5 cm out.
The 6.31 is a clean out-of-sample hit. Fed the real specs behind it — 10.3 m/s, a 5.20 m pole, flex 10–11, top hand 6" down — the equation returns 6.33 to 6.35 m. It also says that vault needed 10.19 m/s, against a reported 10.3. Both are inside 1%, on a jump it was never fitted to.
Below 4.70 m it is extrapolating. No published dataset gives run speed and grip height for developing vaulters, so nothing down there is calibrated — it is the same equation run downward and sanity-checked against the poles coaches actually hand people. Treat it as a starting point, and use the PR field above to pin it to a jump you have really made.
Scroll to fly the camera through his vault, from the plant to the bar.
Stylized 3D recreation, not video. Body poses rebuilt frame by frame from the real footage with Meta SAM 3D Body; height through the vault from that footage, forward path from a 6.31 m biomechanics template.
The world record, term by term, on a strict energy budget — nothing here exceeds 100% of the run. Duplantis hit the plant at 10.3 m/s on a 5.20 m pole.
| Phase | Term | Metres | Running |
|---|---|---|---|
| Approach | Run energy, v²/2g at 10.3 m/s | +5.407 | 5.407 |
| Approach | Standing centre of mass, 0.66h | +1.221 | 6.628 |
| Plant | Collision loss — the box is steel | −1.171 | 5.457 |
| Plant | Plant-arm compliance | −0.036 | 5.421 |
| Bend | Drive into the bend | +0.150 | 5.571 |
| Bend | Swing and rock-back | +0.156 | 5.727 |
| Extend | Top-arm push-off | +0.345 | 6.072 |
| Clear | Turn over the bar | +0.288 | 6.360 |
| Clear | Speed carried over | −0.050 | 6.310 |
Most vault models treat the athlete as a mass hanging off a spring. But you inject work in three places, and you leak it in one — and the difference between doing that well and badly is worth more than any pole on the rack. These are estimated from torque-through-angle and limb stiffness, then checked against published whole-vault energy audits.
| Where the energy moves | Elite | Mechanism |
|---|---|---|
| Top-arm push-off | +0.35 m | 0.7–1.0 bodyweight through ~0.45 m of extension |
| Swing and rock-back | +0.16 m | hip torque 250–350 N·m through ~2.3 rad |
| Drive into the bend | +0.15 m | pressing the pole while it loads |
| Total work in | +0.65 m | 504 ± 19 J — 14% of the run's kinetic energy |
| Plant-arm compliance, braced | −0.04 m | arm stiffness ~27 kN/m, 9 cm of travel |
| Plant-arm compliance, collapsing | −0.18 m | arm stiffness ~12 kN/m, 21 cm of travel |
The full swing of work-in minus arm-leak. Bigger than the free take-off, second only to run speed — and unlike speed, all of it is trainable in the weight room and on the rings.
Braced versus collapsing, with 80% confidence between 0.11 and 0.19 m. The arm stores 120–260 J at the plant and hands back only part of it.
Of all the work you put in, over half is the last thing you do — the top-arm extension as the pole straightens. The swing is only a quarter of it.
Height barely helps you through energy — a higher centre of mass is almost exactly cancelled by hanging further below your own hands. The real effect is geometric: a taller vaulter's top hand is higher at take-off, so the pole stands up more. Less shock into the box, cleaner transfer, and a much higher grip available at the same angle.
| Your height | Grip ceiling at 30° | at 28° | at 26° |
|---|---|---|---|
| 5' 3" (1.60 m) | 4.27 m | 4.55 m | 4.87 m |
| 5' 7" (1.70 m) | 4.51 m | 4.81 m | 5.15 m |
| 5' 11" (1.80 m) | 4.76 m | 5.07 m | 5.42 m |
| 6' 3" (1.90 m) | 5.00 m | 5.32 m | 5.70 m |
| 6' 7" (2.00 m) | 5.24 m | 5.58 m | 5.98 m |
Across all 15 finalists at a World Championship, taller vaulters planted with the pole standing up more. Take-off distance was uncorrelated with height — so it really is just the higher hand.
At a fixed 28° pole angle, that's the gap between a 5'3" and a 6'7" vaulter — seven times bigger than the direct energy effect of being tall.
A shorter vaulter can drop the pole angle to reach the same grip — but every degree given up costs energy into the box. That's the real ceiling, and why tall vaulters end up on bigger sticks.
Never vault on a pole rated below your body weight. This tool floors every recommendation at bodyweight plus 5 lb, but the rack doesn't know that — check the number printed on the pole yourself, every time.
Move one pole at a time, with a coach watching, on a full runway with a proper pit. Flex numbers aren't comparable between manufacturers, so a 17.0 from one brand isn't a 17.0 from another. A website is a starting point for a conversation with your coach, not a reason to grip four inches higher at the next meet.