Swingweight is the single most important racquet spec that most tennis players have never heard of. More important than head size. More important than weight. Here is what it means and how to find your ideal range.
Swingweight measures how heavy a racquet feels when you swing it. It is not the same as static weight. A racquet with weight concentrated in the head will have a high swingweight. A racquet with weight concentrated in the handle will have a lower swingweight, even if the total weight is the same.
The standard measurement is in kg·cm². Most adult racquets range from 300 to 345 strung. The higher the swingweight, the more stable and powerful the racquet, but the harder it is to accelerate.
Two racquets can weigh exactly the same but feel completely different because of how the weight is distributed. A 315g racquet with swingweight 340 will feel significantly more sluggish than a 320g racquet with swingweight 320.
This is why "my racquet feels too heavy" is often actually "my swingweight is too high." And why players sometimes find lighter racquets less maneuverable, because the weight is in the wrong place.
The most accurate way is to have your racquet measured on a RDC (Racquet Diagnostic Center) machine at a pro shop or stringing service. Many good stringers have one.
If you do not have access to a machine, use our free swingweight estimator. It uses your racquet specs to give you a close estimate.
Every gram of lead tape added to the hoop of a racquet increases swingweight by approximately 2-4 points depending on the position. Lead at 12 o'clock has the biggest impact. Lead at 3 & 9 has a smaller but still meaningful impact. Lead in the handle has the least impact on swingweight, as it mostly changes the balance point.
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