How high should a tennis ball bounce? The ITF standard and how you can test it at home

The ITF bounce height requirement for a tennis ball

According to the ITF's official rules, an approved tennis ball must bounce between 135 and 147 cm when dropped from a height of 254 cm onto a hard, horizontal surface. The test is conducted at 20 degrees Celsius, 60 percent relative humidity, and atmospheric pressure at sea level. This is the only official bounce measurement for a tennis ball, and it is the standard all manufacturers must meet for their balls to be approved.

This level of precision might sound a bit academic, but it has a direct consequence for you as a player. A 12 cm window between 135 and 147 cm is narrow. Balls that are barely at the bottom of the range feel significantly different from balls that are at the top – and a ball that falls below 135 cm is no longer ITF-approved, even if it looks completely normal from the outside.

New vs. used: what the numbers show

Let's take four balls and drop them from precisely 254 cm. One brand new, just opened. One that has played two rounds. One that has played five rounds. And one that has been in an open tube for three weeks without use. The bounce values below are Balcour estimates based on the physics that apply to a pressurized rubber core and on reported patterns from players and clubs – they are not measured in a laboratory with ITF-calibrated equipment.

Two things stand out. One is how quickly a ball falls out of the ITF range during normal club play – typically after 2-3 rounds for club players. The other is that a brand new ball that simply sits in an open tube loses almost as much bounce in three weeks as a ball that has played five rounds. It's not wear that costs bounce. It's pressure loss.

How tennis and padel compare

FIP's bounce requirement for padel is 135-145 cm from the same 254 cm drop. The ITF's requirement for tennis is 135-147 cm. On paper, it's almost identical. The difference in how the balls feel on the court therefore doesn't come from different bounce requirements, but from:

• Internal pressure. A tennis ball has an internal overpressure of around 14 PSI. A padel ball is at 10-11 PSI. This is the primary reason why tennis balls feel faster off the strings.
• Weight and diameter. Tennis balls are slightly heavier (56-59.4 g) than padel balls (56-59.4 g – same range, but often in the lower end) and slightly larger.
• The felt. Tennis balls have thicker, more durable felt that resists more wear on the hard tennis court. Padel balls have thinner felt that reacts faster to wall and glass dampening.
• The surface. A padel court is artificial grass with sand. A tennis court is clay or hardcourt. This significantly changes how the ball behaves after the first bounce, but it's not the bounce height from the ITF/FIP test that changes.

If you want to delve deeper into padel bounce and what distinguishes it from tennis, we have a more thorough article on padel ball bounce and its comparison with ITF tennis.

How to test bounce height at home

You cannot conduct an official ITF test without a test chamber, climate control, and calibrated equipment. But you can get a realistic indication of whether the ball is still at the bottom of the allowed range. This requires a tape measure, a piece of concrete or tiles, a stable wall, and 60 seconds.

The expectation for how precisely you can measure is moderate. Room temperature should be close to 20 degrees Celsius, and your eye level should be in line with the bounce peak. A few centimeters of uncertainty is normal. It's not a laboratory measurement. But it is precise enough to tell you whether the ball is at the bottom of the range or significantly below.

What you can do once the bounce is gone

The short version: once the bounce has dropped, the internal pressure has dropped. You cannot "pull" a ball back into the ITF range by resting it. You cannot pump it up. And you cannot cool it in the freezer and expect it to regain its bounce. Some of these tips circulate anyway, and they don't work because the internal overpressure has physically escaped through the porous rubber core.

The only thing that can genuinely restore a tennis ball's bounce is to recreate the internal pressure in a closed environment with higher pressure surrounding the ball. If the external pressure is kept higher than inside the ball, air is slowly pressed back through the rubber core. This is the principle of a pressure storage container.

The Pressurebox Pro is built precisely for this. You place the ball inside, the compressor maintains an elevated, controlled pressure around the ball, and the bounce is preserved – or restored if the ball is new enough that the rubber core is still intact. This works both to maintain new balls in tube format and to give moderately used balls a longer usable lifespan. If you want the full picture of what you can and cannot do with pressure storage, we have a review of tennis ball storage and the myths surrounding it.

In practice

Bounce height is not an abstract technical detail. It is the most reliable sign of whether a tennis ball is still worth opening a new tube for. If you tend to use balls longer than they are ITF-approved for, you lose three things: the feel of your own serve, precision in baseline play, and the ability to practice shots that require precise bounce and predictable trajectory. This is not just a loss in quality – it is actively poor training.

For most Danish club players, it makes good sense to check the bounce after 2-3 rounds, not after a vague feeling that "the ball has started to feel sluggish." The home test above takes less than a minute. If the bounce is over 135 cm, you can continue. If it's under, the ball is out. The signs are compiled in detail in the guide on when to change tennis balls.

And if you want to reduce the number of new tubes you open over a year – both financially and for environmental reasons – it's worth looking at how significant the total cost actually becomes. We have presented this in a review of what tennis balls cost per year with three realistic player profiles, and the result surprises most recreational players.