If you don’t have a fabric-measuring tape, just use a string or a long strip of paper. Wrap the string (or other loose length reference) around your palm as you would use a measuring tape, and be sure to mark off where the end of the string meets the looped length. Now, unfurl the string and measure the marked portion with a ruler.
XS: 7 inches (17. 8 cm) S: 7. 5–8 inches (19. 1–20. 3 cm) M: 8. 5–9 inches (21. 6–22. 9 cm) L: 9. 5–10 inches (24. 1–25. 4 cm) XL: 10. 5–11 inches (26. 7–27. 9 cm) XXL: 11. 5–12 inches (29. 2–30. 5 cm)
If you are measuring your fit for a baseball glove, measure from the tip of your index finger down to your wrist. This number, in inches, corresponds to the listed size of the glove. [4] X Research source If you are measuring for tennis racquet grip size, measure from the tip of your ring finger down to the lowest lateral crease of your palm. This is where your palm folds along the thumb-line. [5] X Research source
If your finger span is six inches or wider, then you should buy a full-sized 4/4 cello. If your span is 5–6 inches (12. 7–15. 2 cm), choose a 3/4 cello; if 4–5 inches (10. 2–12. 7 cm), pick a 1/2 cello; if 3–4 inches (7. 6–10 cm), a 1/4. Bear in mind that height, arm length, age, skill level, and other indices may also be used to decide between cello sizes. Sports camps and sports statistics analyzers use hand span as a handy heuristic. If you are trying to make a name for yourself in competitive football or basketball, you may be asked to report your hand span.
