How to Measure Your Grip Size
There are two methods people use. The ruler method and the index finger method. I've tried both and honestly the ruler method is more reliable, but the finger test works in a pinch when you're trying paddles at a store.
The Ruler Method
Hold your hand open with fingers extended. Measure from the middle crease of your palm to the tip of your ring finger. That measurement in inches is roughly your grip size.
Most people fall between 4 and 4.5 inches. I'm at 4.25 which seems to be pretty common for average-sized hands.
The Finger Test
Grip the paddle with your normal hold. You should be able to fit your index finger from your other hand between your fingertips and palm. If there's no gap, the grip is too small. If you can fit two fingers, it's too big.
Common Grip Sizes
Pickleball paddles typically come in sizes from 4 inches to 4.5 inches, sometimes in 1/8 inch increments. Here's a rough guide:
Small (4 to 4.125 inches)
Good for smaller hands or players who want maximum wrist action. Some people prefer smaller grips for more spin potential. I've seen a few competitive players go this route on purpose.
Medium (4.25 inches)
The most common size. Works for most adult hands. If you're unsure, start here. You can always build up with an overgrip if needed.
Large (4.375 to 4.5 inches)
For larger hands or players who want more stability. Reduces wrist movement which some people prefer for consistency. Less strain on the forearm too.
Too Small vs Too Big
Both extremes cause problems. I learned this the hard way.
Signs Your Grip Is Too Small
You're gripping too tight without realizing it. Your hand cramps during longer sessions. Elbow or wrist pain that doesn't go away. The paddle twists in your hand on off-center hits.
This was my issue. I was squeezing so hard to maintain control that my arm was constantly tense.
Signs Your Grip Is Too Big
Harder to switch grips quickly. Less feel on touch shots. Your hand fatigues because you can't close it comfortably. Some people also report shoulder issues from a grip that's way too large.
Adjusting Your Grip Size
Here's the good news. You can always make a grip bigger, but you can't really make it smaller without replacing the whole handle.
Building Up
Overgrips add about 1/16 inch per layer. So two overgrips can take you from a 4.25 to closer to 4.375. This is way cheaper than buying a new paddle if you just need a slight adjustment.
When in Doubt
Go with the smaller size. You can always build up. Most paddle manufacturers sell replacement grips and overgrips are like $5-10 for a pack.