Golf Tutorials

How to Measure for Golf Club Extensions

By Spencer Lanoue
July 24, 2025

Playing with golf clubs that are too short is one of the quickest ways to sabotage your consistency and comfort on the course. This guide will walk you through exactly how to measure for golf club extensions, covering the fundamentals of why club length matters and providing a simple, step-by-step process to get your numbers right. We'll skip the confusion and give you the clear advice you need to get fitted properly.

Why Club Length is a Game-Changer

Before grabbing a tape measure, it's helpful to understand why this is so important. Your club's length is the foundation of your entire setup. If it's wrong, everything else in your swing becomes a compensation. It dictates your posture, your swing plane, and ultimately, your ability to make solid, repeatable contact with the golf ball.

Think of it like this: your body wants to set up in a naturally athletic stance. When your clubs are too short, you're forced to bend over excessively, hunching your shoulders and rounding your spine just to reach the ball. This isn't just uncomfortable, it's a swing-killer. This compromised posture forces you onto a much steeper swing plane, which is a common cause for nasty shots like the slice or digging the club into the ground before the ball (a "fat" shot).

When your clubs are the correct length, however, something great happens. You can stand tall, with a comfortable spine angle and your arms hanging naturally from your shoulders. This athletic and balanced position allows your body to rotate freely and powerfully, building a swing that is not only more consistent but also much easier on your body, especially your back. It’s the first step toward grooving a swing that feels easy and powerful, rather than forced and crooked.

The Two Key Measurements You Need to Take

Determining the right club length isn't some secretive art form, it comes down to two simple measurements. While many online calculators oversimplify this, getting both of these numbers gives you a surprisingly accurate picture of your ideal club length. Let’s walk through them.

Measurement 1: Your Overall Height

Your static height is the obvious starting point. Standard, off-the-rack golf clubs are typically built for a male golfer between 5'9" and 6'0". For female golfers, standard length is usually designed for a height between 5'5" and 5'8". If you fall significantly outside of these ranges, you are an immediate candidate for non-standard length clubs.

However, height alone doesn’t tell the whole story. You could be 6'3" with disproportionately long arms and need standard length clubs, or be 5'8" with shorter arms and need extensions. That's why our second measurement is the true difference-maker.

Measurement 2: The Wrist-to-Floor Measurement (WTF)

This is the measurement that separates a guess from an educated fit. The Wrist-to-Floor (often abbreviated as WTF) measurement accounts for your arm length in relation to your overall height, giving a far more accurate recommendation. It's the primary a club fitter uses, and it's easy to do at home.

What You'll Need:

  • A reliable tape measure
  • A friend or family member to help you (this makes it much more accurate)
  • A flat, hard surface to stand on (no plush carpets)
  • The shoes you typically wear to play golf

The Step-by-Step Process:

  1. Gear up and find your spot: Put on your golf shoes, as their sole height will affect the measurement. Stand up straight on a hard floor like tile, wood, or concrete.
  2. Assume the position: Stand with your feet about shoulder-width apart, looking straight ahead. Your posture should be upright but relaxed - no shrugging or tensing your shoulders. Let both of your arms hang naturally and comfortably at your sides. Your fingers should be straight and pointing toward the floor.
  3. Take the measurement: Have your friend measure from the prominent crease of your wrist (where your hand and forearm meet) straight down to the floor. For a right-handed golfer, this is your left wrist. For a left-handed golfer, it's your right wrist. The hand should be relaxed, not flexed up or down.
  4. Double-check your work: Take the measurement two or three times to confirm you're getting a consistent number. A half-inch can make a difference, so precision helps. Jot down this number in inches.

Putting the Numbers to Work: Your Personal Fitting Guide

Now that you have your height and your Wrist-to-Floor (WTF) measurement, you can see where you land on a fitting chart. The chart below combines both numbers to give you a recommended adjustment to "standard" club length. Simply find your height in the left column and cross-reference it with your WTF measurement in the top row to find your recommended length adjustment.

Golf Club Length Fitting Chart (for Irons)

Height WTF 29"-31" WTF 31"-33" WTF 33"-35" WTF 35"-37" WTF 37"-39" WTF 39"-41" 6'9" +1" +1.5" +2" +2" +2" +2.5" 6'6" +0.5" +1" +1.5" +2" +2" +2.5" 6'3" Standard +0.5" +1" +1.5" +2" +2" 6'0" -0.5" Standard +0.5" +1" +1.5" +2" 5'9" -1" -0.5" Standard +0.5" +1" +1.5" 5'6" -1.5" -1" -0.5" Standard +0.5" +1" 5'3" -2" -1.5" -1" -0.5" Standard +0.5" 5'0" -2" -2" -1.5" -1" -0.5" Standard

This chart is a strong guideline for static fitting. The shaded green area represents the most common range for golfers buying standard clubs. If you fall outside this range, adjustments are almost certainly necessary.

Important Considerations Beyond the Measurements

These static measurements provide a fantastic, data-driven starting point for getting your club length right. For DIY enthusiasts or those buying custom clubs online, this is the most valuable information you can have. However, a few other factors come into play that are worth knowing about.

The Impact on Swing Weight and Shaft Flex

When you add extensions to a golf club, you're changing more than just its length. You’re also altering its swing weight and shaft flex dynamics.

  • Swing Weight: This is essentially how heavy the clubhead feels during your swing. Adding a shaft extension also adds weight away from your hands, which increases the swing weight. As a general rule, a 1-inch extension adds about 6 swing weight points, making the club feel noticeably heavier. For small adjustments (+0.5"), most golfers won’t feel a huge difference. For longer extensions (+1" or more), its something to be aware of.
  • Shaft Flex: Lengthening a shaft also makes it play slightly 'softer' or 'weaker' in flex. A regular flex shaft extended by an inch might play closer to a soft-regular. Yine, this is a subtle change for minor extensions but becomes more pronounced the longer you go.

This isn't meant to scare you off from making adjustments! It’s just good knowledge to have. If your measurements call for an extension of 1 inch or less, an extension is anexcellent, simple fix. If the chart suggests more than 1.5 inches, it may be worth consulting a professional clubfitter who can adjust the swing weight to match the new length.

Static vs. Dynamic Fitting

What we've done here is called a static fitting. It uses stationary measurements of your body to predict your ideal club spec. A dynamic fitting, on the other hand, involves hitting balls in front of a trained fitter who watches your specific swing tendencies. They use launch monitors and lie boards to see how your posture changes during the swing and where you strike the ball on the face.

A static fitting will get you 90% of the way there and is a massive improvement over playing with stock clubs that don't fit you. For the dedicated golfer, a dynamic fitting is the final step to absolute precision, allowing for tweaks to lie angle and shaft profile in addition to length.

Final Thoughts

Measuring for golf club extensions really just comes down to knowing two numbers: your height and your wrist-to-floor measurement. Getting this adjustment right is fundamental to building a comfortable, repeatable golf swing that allows you to play your best without fighting your own equipment.

Perfectly fitted clubs remove one big variable from the equation, and when it comes to removing other uncertainties on the course, I've designed Caddie AI to be your personal on-demand expert. If you’re ever stuck between clubs, unsure how to play a tough lie, or just need a smart strategy for a tricky par-4, our app provides a straight, simple answer. Our whole idea is to take the guesswork out of golf, so you can stand over every shot with an amazing level of confidence.

Spencer has been playing golf since he was a kid and has spent a lifetime chasing improvement. With over a decade of experience building successful tech products, he combined his love for golf and startups to create Caddie AI - the world's best AI golf app. Giving everyone an expert level coach in your pocket, available 24/7. His mission is simple: make world-class golf advice accessible to everyone, anytime.

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