The Definitive Guide to Badminton String Tension

From a beginner's 22-lb setup to an elite 32-lb stringing — a Copenhagen stringer's framework for every level of player.

Why tension matters more than your racket

Ask any Copenhagen badminton coach what the single most under-appreciated decision a club player makes is, and the answer will not be racket model, shoe brand or shuttle choice. It will be string tension. The pounds of pull baked into your stringbed shape your feel, your power, your durability and — most importantly — whether the racket you spent 1,800 DKK on actually does what the marketing claims.

Tension is, in many ways, the steering wheel of a badminton racket. Get it right and the frame performs as designed. Get it wrong and even an elite racket feels like a wet broom.

The basics: what tension actually does

When a stringer pulls a badminton string to a given tension — measured in pounds (lbs) in most of Europe — they are determining how much the string deflects on impact. Lower tensions produce a trampoline effect: the stringbed flexes deeply on contact, returning energy to the shuttle. Higher tensions produce a stiffer bed: less flex, less rebound energy, but more precise transmission of your racket-head speed into the shuttle.

In simple terms:

Lower tension (20–24 lbs): more power on slow swings, larger sweet spot, more forgiving on off-centre hits, but less control on flat clears and drives.
Medium tension (24–28 lbs): the club-player sweet spot. Balance of power and control. The default at most Copenhagen stringers.
High tension (28–32+ lbs): precise feedback, sharp shuttle response, but punishing on off-centre shots and shorter string life.

What tension to use, by level

Treat this as a starting framework, not gospel — but it lines up with what the better stringers in København actually recommend.

Beginner (first 12 months)

22–24 lbs. Your racket-head speed is still developing; you need the trampoline. A common mistake among newcomers, especially those buying their first Yonex Astrox or Li-Ning AeroBlade, is to immediately string to 26 or 27 lbs because "that is what the pros do." It is a bad idea. You will lose power without gaining control, and the racket will feel dead. Stay at 22–24 lbs until your overhead clears reach the back tramline consistently with smooth swings.

Intermediate (1–4 years)

24–26 lbs. You have built basic technique. You can clear, smash and net consistently. Now tension starts becoming a tuning lever. 25 lbs is the most-strung tension at Copenhagen badminton clubs for adult players, and for good reason — it gives you a credible all-court setup.

Advanced club player (5+ years)

26–28 lbs. You have the swing speed to compress the stringbed at higher tensions. You will notice flatter, faster drives and crisper net shots. Be honest with yourself about your technique here — playing at 28 lbs with imperfect form will frustrate you more than help.

Elite / national level

29–32+ lbs, sometimes higher. Professional players string to whatever their feel demands. Viktor Axelsen has been reported in the 30–32 lb range. Anders Antonsen prefers slightly lower. This is the realm of personal preference, racket compatibility and dedicated re-stringing every 8–15 hours of play.

String choice matters as much as tension

Tension only tells half the story. The string itself — gauge, material, coating — determines durability and feel. Common choices in Copenhagen:

Yonex BG65 / BG65Ti — the workhorse. Durable, forgiving, the most-used string at club level.
Yonex BG80 / BG80 Power — softer, more powerful feel. Popular at 24–26 lbs.
Yonex Aerobite / Exbolt 65 — the high-tension specialist strings. Designed to hold tension better at 28+ lbs.
Ashaway Zymax 67 Fire — a quieter favourite among intermediate players. Crisp, good repulsion.

How often to re-string

Badminton strings lose tension constantly — much faster than tennis strings. A racket strung at 26 lbs may be playing closer to 23 lbs after twenty hours of court time, even if the strings have not broken. A rough rule from Copenhagen stringers: re-string every three months if you play once a week, every six weeks if you play three times a week.

"The biggest mistake I see is people only re-stringing when the strings snap," says Henrik Vestergaard, who runs the stringing room at KB Badminton. "By then they have been playing on a dead racket for two months."

Frame ratings: do not exceed them

Every modern badminton frame is rated for a maximum tension. Exceeding it voids warranty and risks cracking the head, especially on cheaper or older rackets. A few common 2025–2026 frame ratings:

Yonex Astrox 99 Pro — up to 30 lbs
Yonex Nanoflare 800 Pro — up to 28 lbs
Victor Thruster F Enhanced — up to 32 lbs
Li-Ning Axforce 100 — up to 31 lbs

Always check the throat or shaft sticker. A good stringer will refuse to over-string and is doing you a favour.

A simple test for your current setup

Hit twenty overhead clears from your back tramline. If they consistently float short or feel "muscled", your tension is too high. If they fly long or feel uncontrolled, tension is too low. The right tension is the one where a relaxed, technically clean swing produces a clean, predictable result. If you are unsure, drop two pounds at your next re-string and play a session.

The Copenhagen verdict

Tension is personal, but not arbitrary. Find your level, talk to a stringer who plays the sport, and re-string more often than you think you need to. Your racket is a tool; tension is what makes the tool fit your hand.