Core thickness is the depth of the internal honeycomb layer inside a pickleball paddle, measured in millimetres. A 16mm core absorbs more energy on contact, producing better control, a larger sweet spot and more forgiveness on off centre hits. A 14mm core transfers more energy, producing more power, faster ball speed and a snappier feel. Testing across 400 plus paddles found that raw serve speed only differs by about 0.4 MPH between the two, but forgiveness ratings differ by 17 per cent. For most players, especially beginners and intermediate players, 16mm is the safer and more consistent choice.
Two millimetres. That is the difference between a 14mm and a 16mm paddle core. On paper it sounds like nothing. On court it changes the way every single shot feels in your hand.
If you have read our complete paddle buying guide, you know that core thickness is one of the six specs that define how a paddle plays. This guide goes deeper into what that thickness actually does inside the paddle, how it affects your game in real and measurable ways, and which option suits your playing style.
What the Core Actually Does Inside a Paddle
The core is the engine room of a pickleball paddle. It sits between the two outer face layers and is made from a honeycomb structure, almost always polymer in modern paddles. When the ball hits the paddle face, the energy travels through the face and into the core. What happens next depends on how thick that core is.
A thicker core compresses more on impact. It absorbs more of the ball's energy before releasing it back. This creates a softer feel, a longer moment of contact (called dwell time), and a more forgiving response on shots that are not perfectly centred.
A thinner core compresses less. It reflects energy back to the ball more quickly. This creates a crisper, snappier feel, a shorter dwell time, and a faster ball exit speed on clean hits. But it also means less forgiveness when you catch the ball off centre.
Think of it like catching a ball with a thick pillow versus a thin book. The pillow absorbs and cushions. The book bounces the ball straight back with more speed. Neither is better in absolute terms. They serve different purposes.
16mm Core: The Control and Forgiveness Choice
What it does well
A 16mm core gives you the largest usable sweet spot of any core thickness. The extra depth means the honeycomb cells have more room to compress evenly across a wider area of the paddle face. Shots that land slightly off centre still produce a clean, predictable response instead of a harsh, twisting misfire.
This forgiveness matters more than most players realise. Independent testing of over 400 paddles found that 16mm cores scored 17 per cent higher on forgiveness ratings than 14mm cores. In practical terms, that means your dinks land where you aim them even when your contact is not perfect. Your resets stay controlled even under pressure. Your drops clear the net consistently even when your timing is slightly off.
The softer feel also reduces vibration on contact. If you play for 90 minutes twice a week, the cumulative difference in how your arm feels after a session is significant. Players with wrist, elbow or shoulder sensitivity consistently report that 16mm paddles are more comfortable over long sessions.
What it trades away
A 16mm core produces slightly less raw ball speed on hard drives compared to a thinner core. The difference is small. Testing data puts it at roughly 0.4 MPH on average serve speed. You will not feel this in casual play. You might feel it in competitive singles when every fraction of ball speed matters on a drive down the line.
The paddle also sits slightly thicker in your hand, which some players find less aerodynamic during fast swing motions. This is a subtle difference and largely a matter of personal preference rather than a measurable performance gap.
Best suited for
Beginners and intermediate players. Control oriented players who favour dinks, drops and resets. Doubles players who spend most of their time at the kitchen line. Players with arm sensitivity. Anyone who values consistency over raw power. In 2026, the majority of professional players also use 16mm cores because the forgiveness advantage at high speeds outweighs the marginal power loss.
14mm Core: The Power and Speed Choice
What it does well
A 14mm core gives you more pop. The thinner honeycomb compresses less on contact, which means energy returns to the ball faster. Drives come off the face with more speed. Serves have more punch. Volleys feel crisp and immediate. If you are an attacking player who wants the paddle to amplify your aggression, a 14mm core delivers that feeling.
The thinner profile also makes the paddle slightly more aerodynamic through the air, which can translate to marginally faster swing speeds. For players with clean, consistent technique, this combination of faster swings and quicker ball exit creates a noticeable offensive edge.
What it trades away
The sweet spot is smaller. Off centre hits feel harsher, less predictable and more likely to sail in the wrong direction. You need cleaner contact on every shot to get consistent results. If your technique is still developing, a 14mm core will punish your mistakes more visibly than a 16mm core.
Vibration is also higher. The thinner core transmits more shock through the handle and into your arm on every hit. Over a long session, this adds up. Players who are prone to elbow soreness or joint fatigue should think carefully before choosing 14mm.
Best suited for
Advanced players with consistent technique. Power focused players who hit hard drives and aggressive volleys. Singles players who need maximum ball speed on groundstrokes. Players who prioritise pop and speed over touch and forgiveness.
What About 13mm Cores?
A small number of paddles in 2026 use 13mm cores, pushing even further toward the power end of the spectrum. These are specialist paddles for players who want maximum energy transfer and are comfortable with a significantly smaller sweet spot. The vibration is higher, the forgiveness is lower, and the margin for error is the thinnest of any core thickness.
Unless you are an advanced player who has specifically tested a 13mm paddle and prefers it, this is a thickness to try rather than a thickness to buy as your primary paddle. Most players who think they want 13mm end up happier with 14mm because the forgiveness gain is noticeable without giving up much power.
What the Testing Data Actually Shows
Most of the difference between 14mm and 16mm is about feel and forgiveness, not raw performance numbers. Independent testing of over 400 paddles produced some genuinely surprising findings.
Serve speed: 14mm cores averaged 60.1 MPH. 16mm cores averaged 59.7 MPH. A difference of 0.4 MPH, which is essentially invisible during real play.
Spin: Both core thicknesses produced identical average spin rates of 2205 RPM. Core thickness has no meaningful effect on spin. Spin is determined by the face material and surface texture.
Forgiveness: 16mm cores scored 17 per cent higher on forgiveness ratings, meaning off centre hits produced more consistent and predictable results.
Twist weight: 16mm cores showed 3.7 per cent more twist weight on average, which increases stability during off centre contact.
Static weight: Both thicknesses averaged the same static weight at 8.0 ounces. Core thickness does not automatically make a paddle heavier.
The takeaway from this data is clear. If you are choosing between 14mm and 16mm expecting a massive power difference, you will be disappointed. The real difference is in how the paddle feels on contact and how consistently it performs when your hit is not perfectly centred. And that forgiveness advantage belongs firmly to 16mm.
How to Decide: A Simple Framework
Answer three questions and you will know which thickness is right for you.
1. How consistent is your contact? If you regularly hit the ball off centre, choose 16mm. The forgiveness will improve your consistency immediately. If your contact is clean and centred on nearly every shot, 14mm rewards that precision.
2. What is your playing style? If you favour control, touch and patience, choose 16mm. If you favour aggression, hard drives and fast finishes, choose 14mm. For an all court style, either works, but 16mm is the safer default. For a deeper breakdown of how playing style connects to paddle specs, read our control vs power vs spin paddles guide.
3. Do you have any arm sensitivity? If you experience elbow, wrist or shoulder discomfort during or after play, choose 16mm. The vibration dampening is meaningfully better and will reduce cumulative stress on your joints over time.
Rallyn GEN 4 paddles are available in both 14mm and 16mm cores, matched to Control, Power and Spin styles. Explore the specs →
How Core Thickness Interacts with Other Specs
Core thickness does not exist in isolation. It works together with weight, face material and shape to create the overall character of a paddle.
Core + weight: A 16mm core in a lightweight paddle gives you a fast, touch oriented setup. A 14mm core in a heavy paddle gives you maximum power. Mixing and matching creates different balances. Read our paddle weight guide for more on how weight fits into the equation.
Core + face material: A 16mm core with a fibreglass face creates the softest, most forgiving paddle possible. A 14mm core with a raw carbon fibre face creates the most aggressive, spin heavy setup. Read our carbon fibre vs fibreglass guide for the full comparison.
Core + shape: A 16mm core in a widebody shape maximises sweet spot size. A 14mm core in an elongated shape maximises power and reach. Hybrid shapes work well with either core thickness.
When you are choosing a paddle, think of core thickness as one lever in a system of levers. Adjust it alongside the others to create the playing experience you want. For the full picture, return to our how to choose a pickleball paddle guide.
A Note on Foam Cores
Alongside traditional polymer honeycomb, foam cores have become increasingly popular in 2026. Foam cores use a solid or semi-solid foam layer instead of a hexagonal honeycomb. They tend to produce a softer, more cushioned feel with excellent dwell time and durability.
Foam cores do not follow the same 14mm versus 16mm rules as honeycomb. The density and type of foam affect performance differently. If you are considering a foam core paddle, evaluate it based on feel and reviews rather than applying the honeycomb thickness framework directly.
Frequently Asked Questions
Q: What does core thickness mean in a pickleball paddle?
Core thickness is the depth of the internal honeycomb structure between the paddle's two face layers, measured in millimetres. Most paddles use either 14mm or 16mm. Thicker cores absorb more energy, producing better control and forgiveness. Thinner cores transfer more energy, producing more power and speed.
Q: Is 14mm or 16mm better for pickleball?
Neither is universally better. 16mm is better for control, touch and forgiveness, making it safer for most players and beginners. 14mm is better for power, speed and aggressive play, suiting advanced players with consistent technique. Your playing style determines which is right.
Q: What is dwell time in a pickleball paddle?
Dwell time is the fraction of a second the ball stays in contact with the face. Thicker cores compress more, increasing dwell time slightly. This gives a more connected feel and more control over placement. Thinner cores have shorter dwell time, producing a snappier response.
Q: Does core thickness affect spin?
Testing data shows core thickness has minimal direct effect on spin. Spin is primarily determined by the face material and surface texture. A 14mm and 16mm paddle with the same face produce nearly identical spin rates. Choose core for control or power, and choose face for spin.
Q: What core thickness is best for beginners?
16mm is almost always better for beginners. The thicker core provides a larger sweet spot, better vibration dampening, and more forgiveness on off centre hits. 14mm cores punish inconsistent contact more noticeably.
Q: Do professional players use 14mm or 16mm?
The majority of professionals in 2026 use 16mm cores. The larger sweet spot and better forgiveness provide consistency at high speed play. Some power focused professionals prefer 14mm, but 16mm has become the dominant choice at the top level.
Q: Can I feel the difference between 14mm and 16mm?
Yes. While raw speed differs by only about 0.4 MPH on serves, the feel difference is immediately noticeable. 16mm feels softer, more cushioned and forgiving. 14mm feels crisper, snappier and more explosive. Most players can tell within a few rallies.
Rallyn GEN 4 paddles match core thickness to playing intent. The Control paddle uses 16mm for precision. The Power paddle uses 14mm for pop. The Spin paddle uses 14mm with raw carbon fibre for maximum rotation.