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The Ultimate Gauge Guide

Equipment

Curious about how string thickness impacts your spin, durability, and feel? Here's everything you should know about gauges.

By Julissa Sanchez

When it comes to tennis strings, choosing the correct gauge is often overlooked and can be a source of confusion for players. What’s up with the numbering system? Does a higher gauge indicate a thinner or thicker string? And when is it time to experiment with a new gauge? We’re here to unravel these intricacies, as the thickness of your tennis strings can significantly influence your game, from spin generation and durability, to feel and overall arm health. In this guide, we’ll explore what string gauges are, how they affect your performance on the court, and helpful tips to land on the right gauge for you.

STRING GAUGE DEFINED

Tennis strings come in various thicknesses, measured in millimeters. The term “string gauge” refers to the diameter of the string, with higher numbers signifying thinner strings and lower numbers indicating thicker ones. The higher the gauge number the thinner the string and vice versa. For example:

  • 15L gauge: Thickest (1.35 mm)
  • 16 gauge: Thick (1.30 mm)
  • 16L gauge : Medium-thick (1.25mm)
  • 17 gauge: Medium-thin (1.20 mm)
  • 18 gauge: Thin (1.15 mm)
  • 19 gauge: Thinner (1.10 mm)
  • 20 gauge: Thinnest (1.05 mm)

HOW STRING GAUGES AFFECT PERFORMANCE

1. Durability

2. Spin Potential

3. Feel and Comfort

Thin strings (19 and 20 gauge) generally provide more feel, feedback, and comfort. This improved feel allows players to have more confidence behind their shots in terms of finesse and placement. Thinner strings bring less shock and vibration to the player’s arm compared to their thicker counterparts.

Hyper-G and Tour Bite feature the full range of gauge options – from 15L to 20.

HOW TO CHOOSE THE RIGHT STRING FOR YOUR GAME

Choosing the right string gauge is crucial and should align with your playing style, performance goals, and frequency of play. A helpful guideline is this:

A QUICK NOTE ON ARM HEALTH

EXPERIMENTATION IS KEY

THE BOTTOM LINE