Indoor vs Outdoor Pickleball Balls Compared

Outdoor pickleball balls are harder and slightly heavier, with about 40 small holes, while indoor balls are softer and lighter, with about 26 larger holes. Both types are legal anywhere: the 2026 USA Pickleball rulebook says all approved balls are acceptable for indoor or outdoor play.

The difference is about how the ball behaves on a given surface. Here is what separates the two, what the official specifications require, and how to pick the right one.

Indoor vs Outdoor at a Glance

Typical weights and hole sizes are as described by Paddletek. Individual balls vary by brand.

Hole Count and Size

Hole pattern is the easiest way to tell the two apart.

The rulebook itself points this out. Its figure of approved ball examples notes that the ball with larger holes is customarily used for indoor play and the ball with smaller holes is customarily used for outdoor play.

• Indoor balls typically have 26 holes. Paddletek puts the average hole at about 0.43 inches across.
• Outdoor balls typically have 40 holes, averaging about 0.28 inches.

According to Selkirk, the extra, smaller holes help an outdoor ball hold a straighter path in wind. The larger holes on an indoor ball let more air through, which slows it down.

These counts are conventions, not requirements. Pickleball Central lists approved balls with 38 and 48 holes, including one marketed for both indoor and outdoor use.

Hardness and Weight

Outdoor balls are made from harder, more rigid plastic. Indoor balls use softer, more flexible plastic. Paddletek offers a simple test: tap each one on a hard surface, and the outdoor ball clicks while the indoor ball thuds.

Outdoor balls are also a little heavier. Both types have to fall within the same official weight range, but Paddletek puts outdoor balls at about 0.9 ounces and indoor balls at about 0.8 ounces.

The result on court is a faster, firmer outdoor ball and a slower, softer indoor ball that is easier to control. Selkirk describes indoor balls as softer, slower and easier to control, which suits soft shots like the dink.

Durability

The two types fail in different ways.

• Outdoor balls crack. Harder plastic is less elastic, so repeated impact on a rough court eventually splits the ball. Paddletek notes they are replaced more often, especially in competitive play.
• Indoor balls go soft. They deform gradually and rarely crack.

Temperature matters too. Cold makes the plastic more rigid and more prone to cracking, and heat can soften it. Pickleball Central puts the cracking risk for hard outdoor balls at below about 40 degrees Fahrenheit.

Official Ball Specifications

Whether a ball is sold as indoor or outdoor, it has to meet one set of specifications to be approved. The 2026 rulebook covers the basics in Rule 3.C and refers to the USA Pickleball Equipment Standards Manual for the measurements.

From the 2026 rulebook (Rule 3.C):

• Any ball on the approved list can be used indoors or outdoors.
• Each ball has to be a single, consistent color, though no particular color is required. Identification markings are the one exception.
• The name or logo of the manufacturer or supplier has to appear on the ball, either printed or embossed.
• Balls are molded from a durable material and need a smooth surface with no texture. A small ridge along the seam is fine, provided it does not meaningfully change how the ball flies.

From the Equipment Standards Manual (Revision 3.0):

There is no official indoor specification and no official outdoor specification. An indoor ball and an outdoor ball are simply two designs that sit at different ends of the same allowed range.

When to Use Which

The most useful rule comes from Paddletek: choose by court surface, not by whether there is a roof overhead.

Use an indoor ball on smooth surfaces. That means wood gym floors, linoleum, rubber and sport court tiles.

Use an outdoor ball on rough surfaces. That means concrete, asphalt and coated hard courts. This includes indoor facilities with textured hard court surfaces, which play like outdoor courts.

A few more situations:

• Windy day. An outdoor ball cuts through wind better, though it cannot cancel it out.
• Cold day. Hard outdoor balls are more likely to crack. Pickleball Central suggests switching to a softer outdoor ball or an indoor ball in the cold and accepting a softer bounce.
• Leagues and clubs. Some facilities and leagues specify a ball. Ask before you buy a box.
• Tournaments. The Tournament Director chooses the ball, and in a sanctioned event it must come from the USA Pickleball approved ball list. If you are entering an event, practice with the ball it will use.

Using the "wrong" ball will not break any rule. Selkirk's guidance is that you can play an indoor ball outdoors or the reverse, but it is not the way to get the best performance from either.

Does Color Matter?

Not for the rules, beyond the requirement that the ball be one uniform color. Pick a color that stands out against your court and background.

The rulebook does add one related courtesy in its principles of play: players avoid wearing clothing that closely matches the ball color.

Which Ball Should a Beginner Buy?

Buy for the court you will play on most.

1. Mostly outdoor hard courts: a small pack of 40-hole outdoor balls.
2. Mostly a wood-floor gym: a small pack of 26-hole indoor balls.
3. Both: one pack of each. A small pack of balls costs far less than a paddle.

If tournament play is a possibility, look for the "USA Pickleball Approved" marking on the packaging or check the approved ball list.

Balls are one line on a short shopping list. For the rest, see our pickleball equipment list and the guide to choosing a pickleball paddle. If you are setting up your own court to go with them, the court dimensions guide has every measurement.