How Many Dimples Are on a Golf Ball?

Quick answer

Dimple count by ball model

Counts come from manufacturer technical pages: Titleist’s Pro V1 product page and media releases, TaylorMade’s Tour Flight dimple deep dive, and Bridgestone’s Dual Dimple press materials.

Why there’s no standard number

Dimple count falls out of the design as a byproduct. The designer picks a tiling strategy — tetrahedral, octahedral, quad dipyramid — plus a dimple diameter (or a mix of diameters) and a depth profile. Once those are locked, the number of dimples that fit on a 1.680-inch sphere is arithmetic.

Larger dimples mean fewer of them. Smaller dimples mean more. Neither is inherently better. Dean Snell, who spent years designing balls at Titleist and TaylorMade before starting his own company, describes the target as a compact wake and consistently attached airflow — not a particular integer.

That’s why one brand’s own lineup spans such a range. Titleist alone ships balls at 388, 376, 350, 348, and 346 dimples, and each pattern exists to produce a specific flight window: the Pro V1x (~97) higher than the Pro V1 (~87), the AVX (~77) lower than both.

What the Rules of Golf actually regulate

The USGA and R&A say nothing about dimples. Their Equipment Rules constrain four things:

1. Size — the ball must be at least 1.680 inches (42.67 mm) in diameter.
2. Weight — no more than 1.620 ounces (45.93 g).
3. Initial velocity — capped at 250 feet per second off a mechanical striker, measured 2π feet after impact.
4. Overall Distance Standard — total carry plus roll under standardized test conditions.

The one rule that touches dimples does so sideways. The symmetry rule states that a ball “must not be designed, manufactured or intentionally modified to have flight properties which differ from those of a spherically symmetrical ball.” No self-correcting dimple layouts, no hemisphere weighted to fight a slice. That requirement is why every conforming pattern derives from a regular polyhedral tiling — it’s the cleanest way to distribute dimples evenly enough that the ball flies the same regardless of how it sits on the tee.

So a 260-dimple ball and a 450-dimple ball are equally legal. Conformance rides entirely on how the finished ball performs on the velocity and distance tests. The Equipment Rules also require that a ball’s materials and construction stay within the traditional and customary form of the game, which polices exotic designs at a level well above dimple geometry.

How dimples actually work

A ball moving through air drags a thin film of air along with it, called the boundary layer. On a smooth sphere that layer stays laminar and peels off early, leaving a wide, churning, low-pressure wake behind the ball. That wake is a suction cup. It’s why a smooth ball falls out of the sky.

Dimples trip the boundary layer into turbulence on purpose. A turbulent layer has more energy, so it hugs the surface farther around the back of the ball before separating. The wake shrinks. Pressure drag drops — by up to about 50% at typical driver speeds, per Snell’s design notes citing NASA’s work on dimpled spheres.

The trade is real but lopsided. Turbulence raises skin-friction drag slightly. On a smooth sphere at golf-ball Reynolds numbers, roughly 90% of total drag is pressure drag and only 10% is friction, so cutting the big number nearly in half while nudging the small one up is a large net win.

Backspin does the rest. A backspinning ball drags air faster over its top than its bottom, which drops pressure above and raises it below, producing lift — the Magnus effect. Dimples keep the airflow attached where that pressure difference needs to form, so lift stays predictable instead of flickering with every wobble in the strike.

The headline number: Snell, citing Scientific American, puts a smooth ball at roughly 130 yards against about 280 yards for a modern dimpled ball struck the same way. Dimples are worth more than half your driver distance.

Depth beats count, and it isn’t close

Modern dimples run about 0.010 inches deep (0.25 mm), though most brands don’t publish per-model depth. Snell’s account of the design process describes iterating on depth and edge contour in increments of hundredths of an inch and watching drag and lift coefficients move measurably. Adjustments you can’t see with the naked eye change where a ball peaks and how it behaves in wind.

TaylorMade’s Tour Flight development notes make the point cleanly. Their engineers decoupled dimple volume from dimple depth — previously linked parameters — and built a shallower dimple with steeper walls at the same volume. Count stayed fixed at 322. The result was less drag on the way up and more lift on the way down, giving the TP5x (~97) a steeper descent angle with long irons.

Same story at Srixon. The Z-Star (~88) uses 338 Speed Dimples whose deeper dimensions are the marketed feature, aimed at punching through wind with a low drag coefficient. Bridgestone’s Dual Dimple nests a smaller dimple inside a larger one on all 330 dimples of the Tour B XS (~86), which changes local wall angle rather than count.

Three variables move ball flight, in rough order of influence: depth and edge profile, pattern shape and coverage, then count. Manufacturers publish the count because it’s a single memorable number. They tune the other two.

A short history of the dimple

Golf balls were smooth once, and they flew badly. Mid-1800s gutta-percha balls were molded as plain spheres, and players noticed that beaten-up ones with nicks and scuffs carried farther than fresh ones out of the box. Ball makers started hand-hammering patterns into new balls to mimic the effect.

The first deliberate patterns were raised, not recessed — “bramble” balls covered in small bumps, borrowed from the look of a berry. Coburn Haskell’s wound rubber-core ball arrived around 1898 and raised ball speeds enough that aerodynamics started to matter more, which sharpened the incentive to get the surface right.

The inversion came in 1905, when English engineer William Taylor patented the recessed dimple. Depressions turned out to manage the boundary layer better than bumps and were easier to mold consistently. Every conforming ball built since has used some version of Taylor’s idea. Counts crept upward through the 20th century as wind-tunnel work showed that more, smaller dimples gave more uniform coverage, then settled into the few-hundred band once computational fluid dynamics let designers tune depth and edge angle instead of just packing more in.

Does dimple count matter when you’re buying a ball?

For almost every golfer, no.

Independent robot testing sorts balls by construction, compression, cover material, and spin profile. Those four explain nearly all the performance spread you’ll ever feel. A two-piece ionomer ball and a five-layer urethane tour ball can carry identical dimple counts and behave nothing alike — the Callaway Supersoft (~38) and Chrome Tour (~87) both use 332 dimples and sit at opposite ends of the fitting map.

Run it the other way and the point holds. The TP5 (~87) at 322 dimples and the Pro V1 (~87) at 388 are both premium urethane tour balls in the same compression tier, and their real differences — TP5’s higher flight and higher wedge spin against the Pro V1’s flatter, more penetrating window — trace to core gradients and cover chemistry as much as to aero.

There’s one honest exception. If you play in steady wind, the language around a pattern is a useful trajectory hint. Titleist markets the AVX’s quad dipyramid pattern and Velocity’s octahedral pattern as piercing and low-peaking. Srixon markets Speed Dimples for headwind performance. Those descriptions tell you something about flight window. The count attached to them tells you nothing.

Practical order of operations: pick your compression tier from your swing speed, pick your cover from how much greenside spin you actually use, pick your price from how many balls you lose. Dimple count stays where it belongs, as trivia you can win a bet with.

The next step

Dimples are settled engineering, and every ball in the BallCaddie catalog has a pattern its maker spent years refining. The variables still worth your attention are compression, cover, spin, and budget. The fitting quiz scores all 70 balls against those four in about 90 seconds, and it’ll tell you when a $19.99 dozen is the right answer.

For deeper dives on the parts of ball design that do change your scores:

• Golf ball compression chart — every ball’s measured compression on one calibrated gauge, with the swing-speed tier breakdown.
• How to choose the right golf ball for your swing speed — the framework that maps swing speed to compression tier, with example balls per band.
• Urethane vs. ionomer golf balls — the cover-material decision, which changes greenside spin far more than any aero feature.
• Golf ball fitting: how it works — the green-to-tee method and the four inputs that actually decide your ball.
• Best low-spin golf ball — where trajectory and driver spin get sorted, if flight window is what brought you here.

Key takeaways

• 300–500 dimples is the normal range. Pro V1: 388. Pro V1x: 348. Chrome Soft and Chrome Tour: 332. TP5 and TP5x: 322. Tour B XS: 330.
• Nothing in the Rules of Golf regulates dimple count. Size, weight, initial velocity, distance, and spherical symmetry are the only constraints.
• Depth (~0.010 in) and edge profile outrank count. TaylorMade rebuilt the TP5’s aerodynamics without changing the number of dimples at all.
• Dimples are worth roughly half your driver distance — about 130 yards smooth versus 280 dimpled, per Snell citing Scientific American.
• Count is not a fitting input. Two balls at 332 dimples can be a 38-compression ionomer and an 87-compression urethane tour ball.