48 Inches. Unless You're Good, Then 46.
Under the Rules of Golf, any club except a putter may be up to 48 inches long. Model Local Rule G-10 lets committees cut that to 46 inches, and every major professional tour has adopted it. G-10 is an option, not a Rule — if you play club or recreational golf, your limit is 48 inches unless your committee says otherwise.
| Maximum length, Rules of Golf · Equipment Rules | 48 inches |
|---|---|
| Maximum under MLR G-10 · Model Local Rule G-10 | 46 inches |
| G-10 effective from | 1 January 2022 |
| Putters | Exempt from both limits |
| Minimum length, any club | 18 inches |
Two numbers, and why everyone confuses them
Search for the maximum legal driver length and you will get 46 inches and 48 inches with roughly equal confidence. Both are right. They answer different questions.
48 inches is the limit in the Rules of Golf, applying to every club except a putter. This is the number that governs your golf.
46 inches comes from Model Local Rule G-10, which took effect 1 January 2022. A Model Local Rule is an option a committee may adopt — it is not part of the Rules of Golf and it binds nobody who has not adopted it. The PGA Tour, DP World Tour and the other major tours adopted it immediately, which is why golf media discuss it as though it were universal. It is not.
If you play club golf, society golf, or golf with your friends, your limit is 48 inches.
Where G-10 came from
The governing bodies’ Distance Insights Project concluded that sustained distance increases were detrimental to golf’s long-term future. G-10 was one of the first concrete responses — narrow, optional, and aimed squarely at the elite game where distance gains were most visible.
That design is deliberate. It creates a soft form of bifurcation: elite competition plays a slightly more constrained game while recreational golfers are left alone. The ball rollback follows the same logic on a much larger scale.
How length is measured
Not from the ground to the grip cap in whatever way seems reasonable. The official procedure is specific:
The club is laid on a horizontal plane, with the sole set against a 60-degree plane. Length is the distance from the point where those two planes intersect to the end of the grip.
Note what is doing the work here. The 60-degree plane is what the sole rests against. It is not the angle of the shaft — a common misreading, and one that describes a different measurement producing a different number.
This matters practically: a driver advertised at 45.75 inches may measure differently once assembled and gripped, and most measurement disputes turn out to be measurement-method disputes.
The distance question, honestly
Longer shaft, wider arc, more clubhead speed. Roughly 2.5 to 3 yards per additional half-inch, in theory.
In practice, a longer shaft is harder to control and centre contact suffers. A drive struck half an inch off-centre loses more than the extra length gained. This is why the 48-inch driver experiment largely failed on tour before G-10 formalized its death — Bryson DeChambeau’s well-publicized testing being the visible example.
For an amateur, going longer is usually a net loss. The exception is a golfer with a genuinely slow swing who is not close to their control limit, where extra length can help.
What is actually illegal here
Length itself rarely makes a club non-conforming, because 48 inches is generous and almost nothing on the retail market approaches it. Where you find non-conforming length is in specialist long-drive equipment, and in clubs built past 48 inches for novelty.
The more common route to a non-conforming driver is the face, not the shaft. That is covered in spring effect.
Common questions
Is a 47-inch driver legal?
In recreational and most club golf, yes — it is under the 48-inch Rules limit. In a competition that has adopted Model Local Rule G-10, no. The answer depends entirely on which competition you are in.
Does the 46-inch rule apply to me?
Almost certainly not. G-10 is intended for professional and elite amateur competition. It is not a Rule of Golf and it does not apply to recreational play unless your committee has specifically adopted it.
Why are putters exempt?
Long putters serve a different purpose and were addressed separately through the anchoring ban rather than through a length cap.
Does a longer driver actually help?
It raises potential clubhead speed and lowers the odds of centre contact. For most golfers the second effect cancels the first. Tour players who tested 48-inch drivers mostly abandoned them before G-10 forced the issue.