Wrist-to-Floor Beats a Height Chart Every Time

Filed under Measurement · Written at the bench · About seven minutes

Almost every printed fitting chart in circulation starts with height. It is easy to collect, everybody already knows their own, and it produces a plausible-looking table. It is also the weaker of the two numbers you actually need, and in a meaningful minority of players it points in the wrong direction entirely.

Here is the problem in one sentence: height tells you how far the top of somebody's head is from the floor, and a golf club is not held by the top of the head.

What the second number is

Wrist-to-floor is the vertical distance from the crease on the underside of the wrist to the ground, taken standing upright with the arms hanging relaxed. It captures arm length, shoulder position and torso proportion in one figure, and those three things are what determine how far the hands sit from the ground when a player addresses a ball.

Two golfers of identical height can differ by two and a half inches on this measurement. We have seen it in the same family. A long torso with short arms and a short torso with long arms produce the same reading on a doorframe and completely different hand positions over the ball.

Taking it so the number means something

The measurement is simple and easy to take badly. The three errors we see most often, in the order they cost accuracy:

• Measuring in bare feet, then playing in shoes with a half-inch sole stack
• Locking the shoulders back into a posture nobody uses at address
• Measuring to the heel of the hand rather than the wrist crease

We take it three times, in the golf shoes you arrived in, and average the readings. If the three are more than a quarter inch apart, something is wrong with the posture and we start over. People stiffen up when a tape measure appears, and a stiffened posture reads shorter than a natural one.

The crease matters. There is a clear horizontal fold on the underside of the wrist where the hand meets the forearm, and that is the landmark. Measuring to the base of the palm instead adds most of an inch and quietly makes every downstream recommendation too short.

What the number controls

Wrist-to-floor sets the opening window for playing length. It does not set the final length, because that gets settled on the board with a club in your hands. What it does is narrow the search from the whole range down to about an inch of it, which is what makes the rest of the session possible in the time available.

The relationship is inverse and it surprises people. A larger wrist-to-floor figure means the hands hang further from the ground, which generally means a shorter club, not a longer one. Tall players with long arms are frequently fitted into standard or even slightly short irons, and they spend years assuming they should be in plus half an inch because a chart in a magazine said tall players play longer clubs.

Then length changes lie, which is the real point

This is where the two specifications tangle together, and it is why we settle length before touching lie angle. Adding half an inch to an iron makes it play roughly a degree more upright at the same posture. Take half an inch off and it plays about a degree flatter.

So a length recommendation derived from a bad measurement does not just give you a club of the wrong length. It gives you a club whose sole cannot sit flat, which points the leading edge away from where the face is aimed, which produces a miss that has nothing to do with your swing. Then somebody bends the lie to fix the symptom without correcting the length, and you own a club that is wrong in two directions at once instead of one.

Where it matters most

For a player of average proportions who is going to end up near standard specification anyway, the difference between a height chart and a proper measurement is small enough to ignore. We say that plainly because it is true for a good share of the people who walk in.

It matters enormously at the edges. Juniors, because their arm-to-torso proportion changes faster than their height does and a chart built for adults does not describe them at all. Women being fitted out of stock sets, because those sets encode a length assumption rather than a measurement. Older players, because posture change alters the effective figure even when the static one has not moved. And anyone unusually tall or unusually short, where the averaged recommendation stops being approximately right and becomes simply wrong.

Do it yourself before you book

You need a wall, a hardback book and a tape measure. Stand with your back to the wall in the shoes you play in, arms hanging. Have somebody slide the book up under your wrist until the top edge sits at the crease, mark the wall along the top of the book, and measure from the mark to the floor. Three times, averaged.

That number, plus your height, gives you a starting point that is genuinely more useful than either alone. Bring both when you come in and we will spend the first twenty minutes on something more interesting than a tape measure.