Estimate an adult tennis racket grip size from the ruler measurement between the lower lateral palm crease and ring-finger tip.
Tennis Grip Size Formula or Method
The ruler method provides a starting estimate of grip circumference. This guide compares the measurement with the displayed adult sizes from 4 to 4 5/8 inches; between sizes, it starts with the smaller one so fit can be checked with the racket.
How the Calculation Works
The calculator converts the entered measurement using exactly 1 inch = 25.4 mm = 2.54 cm, then compares it with 4, 4 1/8, 4 1/4, 4 3/8, 4 1/2, and 4 5/8 inches (L0 through L5). It does not round millimeters to a hand-length band or claim the smaller neighbor is the nearest size.
How to Use This Calculator
- Open your hand and measure from the lower lateral palm crease to the ring-finger tip.
- Select inches, centimeters, or millimeters and enter the measurement without rounding. Changing units converts the same quantity.
- Select Calculate and review the primary result, supporting values, and steps.
- Use Reset before starting a new sample.
Worked Example
A 4.40-inch hand measurement lies between 4 3/8 and 4 1/2 inches. The smaller starting fit is 4 3/8 inches, labeled L3 or size 3. The US measurement is the circumference in inches, not the number 3.
Input and Result Guide
| Item | How to use it |
|---|---|
| Measurement line | Measure from the lower lateral palm crease to the tip of the ring finger. |
| US size | The circumference is stated in inches. |
| European size | L0 through L5 correspond to the common adult size steps. |
Interpreting the Result
Try the handle to confirm fit. A measurement below 4 inches or above 4 5/8 inches is outside this displayed guide; no L-size is extrapolated. This does not imply that other racket sizes are unavailable.
Assumptions and Limitations
This is a starting estimate. Hand shape, brand geometry, replacement grips, and overgrips affect fit; when between sizes, the smaller size is easier to build up.
Common Questions
Why does the guide start with the smaller size between two labels?
HEAD recommends starting smaller when between sizes because grip layers can build up the handle. This is a starting-fit convention rather than a universal prescription or nearest-size rounding rule.
Will my last successful calculation be restored?
Yes. A successful calculation saves a versioned measurement and unit snapshot in this browser. Unit conversions retain the exact original quantity until you edit the measurement; the result is recomputed on return, without storing result HTML. Other scripts on this site may access saved values. Reset clears this calculator’s saved data.
Sources
The ITF racket equipment guide describes ruler and physical-fit methods. HEAD grip-size guidance advises the smaller starting size when between sizes. The Wilson racket guide supplies the common 0–5 labels and inch circumferences. The displayed range and exact neighboring-size comparison are this calculator’s stated guide.
