Grip Size Calculator

Why grip size is worth getting right

Grip size is one of those small numbers that quietly shapes every shot you hit. The handle is the only part of the racket you actually touch, so if it is the wrong thickness your hand compensates without you noticing. A grip that is too big forces your fingers to spread and stops the wrist from snapping through serves and topspin. A grip that is too small lets the racket twist on off-centre hits, so you squeeze harder to hold it steady. Either way you lose feel and add strain.

For recreational players the difference between two sizes is only an eighth of an inch, but you feel it on every rally. The good news is that grip size is easy to measure at home and cheap to adjust. This calculator turns a single hand measurement into a recommended size, then tells you how to fine-tune it with an overgrip or a heat-shrink sleeve.

How to measure your grip size at home

You need a ruler and your dominant hand. Open your palm flat with the fingers together and pointing straight up. Find the bottom lateral crease of your palm, which is the horizontal line that runs across the base of your palm nearest the wrist. Measure from that crease to the tip of your ring finger, following the line of the finger. That length, read in inches, is your starting grip size.

Take the measurement two or three times and use the average, because a millimetre of drift is enough to push you across a size boundary. If you only have a metric ruler, measure in millimetres and switch the calculator to mm. It converts to inches for you before matching a size. Measure with a relaxed hand rather than a stretched one, since you play with a natural grip, not a rigid one.

How the calculator reads your measurement

Tennis grips run in eighth-of-an-inch steps, so the sizes are not continuous. Your measured length almost never lands exactly on a size, which raises the question of which way to round. The calculator always rounds down to the nearest size rather than up. If you measure 4.30 inches, it gives you the 4 1/4 grip rather than the 4 3/8, because a slightly smaller handle is the safer starting point.

The logic is simple: you can always make a grip bigger, but you cannot make it smaller. An overgrip or a build-up sleeve adds thickness to a handle that is a touch too thin, while there is no easy way to shave down a handle that is too fat. Starting one notch small keeps your options open.

Tennis grip sizes explained, US and European

Tennis uses two labels for the same handles. The US system numbers grips from 0 to 5, and the European system labels them L0 to L5. They map one to one, so a US Grip 2 is the same handle as an L2. The number is tied to the handle circumference in inches.

As a rough guide, Grip 0 is 4 inches around, and each step up adds an eighth of an inch: Grip 1 is 4 1/8, Grip 2 is 4 1/4, Grip 3 is 4 3/8, Grip 4 is 4 1/2 and Grip 5 is 4 5/8 inches. Most adult men land on a 3 or 4, and most adult women on a 1 or 2, but hands vary, so measure rather than assume. Juniors and players with small hands often sit at 0 or below, which is why lighter junior frames come in the thinnest handles.

Pickleball grips run smaller

Pickleball paddles use narrower handles than tennis rackets, and the circumference range is tighter, usually between about 4 and 4 1/2 inches. Many paddles ship in a single grip size, so instead of choosing a handle you buy the paddle and then adjust the grip to fit.

Because the range is small, most players are well served by a slightly thinner handle and an overgrip or two to reach a comfortable thickness. A thinner pickleball grip also helps with the quick hands you need at the kitchen line, where wrist flicks and fast resets matter more than raw leverage. If you are switching from tennis, expect the paddle handle to feel small at first, and resist the urge to build it up to your tennis size straight away.

Padel handles and why they feel different

Padel rackets are the outlier. Almost every padel racket comes in a single handle size, and the handle is shorter and often a little thinner than a tennis grip. Padel is a wristy game played close to the body and off the walls, so a compact handle that lets the wrist work freely is the norm rather than a compromise.

Rather than choosing a size, padel players tune fit with overgrips. Wrapping one or two overgrips brings the handle up to a comfortable thickness and improves sweat absorption, which matters in long, humid rallies. Many players also fit an extra layer at the very bottom of the handle to build a small flare that stops the racket sliding out on the follow-through.

Overgrips, replacement grips and heat-shrink sleeves

There are three ways to change how a handle feels, and they do different jobs. A replacement grip is the base grip that sits directly on the handle. Peeling it off and fitting a thicker or thinner one changes the feel without changing the size much. An overgrip is the thin, tacky wrap you add on top; it is cheap, quick to change and the first thing to replace when the tackiness goes.

For sizing, the two numbers to remember are these: one overgrip adds roughly 1/16 of an inch, which is half a grip size, and a heat-shrink sleeve adds about 1/8 of an inch, which is a full size. So if the calculator puts you between two sizes, you can buy the smaller handle and add an overgrip to land in the middle, or buy the smaller handle and fit a heat-shrink sleeve to move up a full size.

• One overgrip: about 1/16 inch, half a size, easy to add or remove.
• Two overgrips: about 1/8 inch, a full size, with extra cushioning.
• Heat-shrink sleeve: about 1/8 inch, a full and permanent size increase.

When you are between sizes, size down

This is the single most useful rule in grip fitting. If your measurement sits between two sizes, choose the smaller handle. A smaller grip gives you more wrist freedom for spin and serves, and you can always add an overgrip to fine-tune the thickness upward. Going bigger removes that flexibility and can leave you locked into a handle that feels like a broom.

There is a comfort case too. A grip that is slightly small lets you adjust your hand position mid-point, which is common in doubles and at the net. A grip that is too big keeps your hand in one place and transfers more shock into the forearm on every impact.

Grip size, comfort and tennis elbow

Grip size will not cure an injury, but the wrong size can feed one. Tennis elbow, or lateral epicondylitis, is aggravated by repeated shock and by gripping too hard. A handle that is too small makes you squeeze to keep the racket from twisting, and that constant tension travels straight up into the forearm and elbow.

If your arm has been sore, check the basics before you blame technique: a grip in the right size range, a fresh cushioned grip for shock absorption, and softer strings at a sensible tension. Our string tension calculator covers the tension side, and adding a little mass low on the handle can steady the racket without loading the arm, which the lead tape calculator can model.

How to build up or reduce a grip

To build up a handle, the cleanest route is a heat-shrink sleeve. You remove the existing grip, slide the sleeve over the handle, warm it with a heat gun until it contracts tight, then refit your base grip and overgrip on top. This adds a full, even size and lasts as long as the handle. For smaller changes, simply add overgrips.

Reducing a handle is harder and best avoided, which is the whole reason to size down when in doubt. Some stringers can shave a pallet on certain frames, but it is fiddly and not reversible. In practice, buying the correct base size and adjusting upward with grips covers almost every player, which is exactly what this calculator is built to help you do.