Choose badminton strings by the exact model's gauge, construction and the feel the maker describes, then set tension within the racquet maker's range. Yonex lists BG66 Ultimax at 0.65 mm and BG80 at 0.68 mm with different constructions, while Babolat treats tension as a separate choice related to swing speed. Those product details are more useful than a universal string-by-level chart.
Badminton strings vary in gauge, material and construction. Compare those details on the maker’s own chart, then choose a tension that fits the exact racquet and how quickly you swing.
Compare published string specifications
| String | Gauge | Published construction |
|---|---|---|
| Yonex BG66 Ultimax | 0.65 mm | High-intensity nylon multifilament core with a braided high-polymer nylon outer |
| Yonex BG80 | 0.68 mm | High-polymer nylon multifilament core with Vectran and a special braided nylon outer |
These are two examples, not a universal ranking. Check the exact string page or catalog for its current gauge and materials. Yonex’s own string catalog lists multiple gauges and constructions, while Babolat describes different choices by feel and string characteristics.
Choose by the feel you want
Start with the string maker’s descriptions of control, sound, repulsion, feel and strength. Treat those as product guidance from that maker. For instance, Babolat presents separate feel and strength profiles across its I Feel strings. A thinner gauge is one specification to compare, but it does not give a complete prediction of how a string will feel in every racquet.
Set tension for the exact frame
Tension is a separate decision from the string model. Check the tension range the racquet maker publishes for your frame and keep the setup within it. Babolat notes that badminton tension should be considered alongside the player’s arm speed, rather than chosen from a universal beginner or advanced chart. Tell the stringer what you want to change, such as a firmer or softer response, and let them account for the racquet’s stated limit.
Our badminton racquet buying guide covers frame weight, balance and flex. The shuttlecock speed guide explains feather shuttle speed codes, and the badminton grip guide covers handle sizing. Browse the badminton category for more gear advice.
Sources
- Babolat: How to choose badminton strings (accessed November 5, 2026)
- Yonex: BG66 Ultimax (accessed November 5, 2026)
- Yonex: BG80 (accessed November 5, 2026)
- Yonex: Badminton catalog 2026 (accessed November 5, 2026)
Common questions
What badminton string gauge should I choose?
Compare the millimeter gauge and construction for the exact string. A lower millimeter number is a thinner string, but gauge alone does not describe every play characteristic or establish one best choice.
Are thinner badminton strings always better?
No. Manufacturers describe strings by different combinations of feel, control, repulsion and strength. Compare the exact maker's guidance with what you want from the string bed.
What tension should I use for badminton?
Stay within the string tension range published for your exact racquet and ask a stringer to help match it to your swing. Babolat says badminton tension and arm speed should be considered together.
Does string gauge determine power?
Not by itself. Babolat says gauge is one factor and discusses tension and swing speed separately when explaining power and response.