Tennis String Tension Guide:
What Tension Should You Use?
String tension is one of the most impactful — and most misunderstood — variables in tennis equipment. Most players assume higher tension means more power. It's the opposite. This guide explains exactly what tension does to your game and how to find the right number for your racket, string, and style of play.
What Tension Actually Does
String tension determines how much the string bed deforms when the ball makes contact with the racket. A looser string bed (lower tension) flexes more, creating a trampoline effect that stores and releases energy back into the ball. A tighter string bed (higher tension) flexes less, meaning less energy transfer from the strings — but more precise, predictable ball direction.
In practical terms: lower tension = more power, less control. Higher tension = more control, less power. This is consistently counterintuitive for new players who assume "tighter = more power."
Think of a trampoline: a looser, more flexible surface launches you higher (more energy). A rigid, non-flexing surface doesn't launch you at all. Tennis strings work the same way — the string bed's elasticity is what amplifies the ball's speed off the racket.
Higher vs Lower Tension: The Trade-offs
- More control
- More precise ball placement
- Less power assistance
- More shock transmitted to the arm
- Less string movement (more spin from technique)
- Better for fast swingers who generate their own power
- More power
- Larger sweet spot
- Less precision at high swing speeds
- More arm-friendly (more shock absorption)
- More string movement (more spin potential for poly)
- Better for slower swingers and players with arm issues
The "right" tension isn't about high or low — it's about finding the tension where your shots feel most consistent and controlled. Most recreational players benefit more from slightly lower tensions than they think.
Recommended Tensions by Player Type
These are general starting points. Always check your racket's recommended tension range first — going outside the manufacturer's range risks frame damage.
| Player Type | Suggested Range | Reason |
|---|---|---|
| Beginner | 50–54 lbs | Power assistance helps develop rallying. Soft tension is arm-friendly while technique develops. |
| Intermediate — slow swing | 52–56 lbs | Moderate tension balances control and power. Avoids balls sailing long. |
| Intermediate — fast swing | 54–58 lbs | Higher tension tames fast swings and prevents balls from flying out. |
| Advanced — control style | 56–62 lbs | High control, precise placement. Player generates their own power through swing speed. |
| Advanced — power style | 50–55 lbs | Lower tension with stiff poly creates a firm but lively response. Maximizes pace on flatter shots. |
| Arm pain / tennis elbow | 48–53 lbs | Low tension reduces shock transmission. Should be combined with arm-friendly string (multifilament or gut). |
Many recreational players assume pros string at 60–70 lbs. In reality, most ATP pros use polyester at 48–55 lbs — much lower than expected. The control comes from the string's stiffness and the player's technique, not high tension. Stringing very tight is rarely the right move.
Tension by String Type
Different string materials behave very differently at the same tension. Always adjust your tension expectations based on the string you're using.
Polyester / Co-Polyester
Polyester is stiff — at any given tension, it feels tighter than multifilament or gut. String poly 3–5 lbs lower than you would with multifilament to get a comparable feel. Many poly users find 48–54 lbs gives them more spin, more snap-back (string movement), and better power without sacrificing too much control.
Multifilament
Multifilament strings are more elastic than polyester. They can be strung at or slightly above the midpoint of your racket's range. The softer feel means more power at the same tension compared to poly, so players switching from poly to multifilament often need to go up 3–5 lbs to maintain similar control.
Natural Gut
Natural gut is the most elastic string available. It produces more power and better feel than any synthetic, but it's expensive and loses tension faster in humid conditions. String gut at the high end of your comfort range, as it will drop 5–7 lbs in the first few days. Many players string gut 2–4 lbs higher than their usual tension to account for this initial drop.
Hybrid (Gut Mains / Poly Crosses)
The most popular hybrid setup among advanced players. Gut mains provide feel and arm comfort; poly crosses add durability and spin. String the poly crosses 2–4 lbs lower than the gut mains, as poly at equal tension would overpower the gut. The combination delivers professional-level performance at a fraction of the full natural gut cost.
Tension and Arm Pain
If you suffer from tennis elbow, wrist pain, or shoulder problems, tension is one of the key variables you need to address. High tension causes strings to flex less, meaning more vibration and shock travels through the frame and into your arm on each shot.
What to Do If You Have Arm Pain
Step 1: Drop your tension by 5–7 lbs. This alone can make a noticeable difference in how much shock reaches your arm.
Step 2: Switch to a softer string. Multifilament strings absorb significantly more shock than polyester. Natural gut is the most arm-friendly option available.
Step 3: Avoid stiff strings entirely. StringMatch uses ERT (Effective Rigidity Test) ratings to identify arm-safe strings — any string rated above 55 ERT is filtered out for players who select arm pain as a concern.
Players with arm pain often string tighter thinking it will "control" their shots better and reduce the energy going into their arm. The opposite is true. String looser, use a softer string, and let the string bed absorb the impact rather than your arm.
See our full guide: Best Tennis Strings for Arm Pain and Tennis Elbow.
Tension Loss Over Time
Every tennis string loses tension from the moment it's strung — this is called tension loss or tension creep. It happens whether you play or not, but accelerates with use.
How Fast Do Strings Lose Tension?
Most strings lose 10–15% of their tension within the first 24 hours after stringing, simply from the string settling into the racket frame. After that, tension drops more gradually with each play session.
| String Type | Initial Drop (24h) | Monthly Loss (regular play) | Lifespan |
|---|---|---|---|
| Polyester | 10–15% | High — poly goes "dead" quickly | 4–8 weeks of regular play |
| Multifilament | 8–12% | Moderate | 2–4 months of regular play |
| Natural Gut | 5–10% | Low — gut holds tension best | 3–5 months (dry conditions) |
| Hybrid (Gut/Poly) | 8–12% | Moderate | 3–4 months |
When Should You Restring?
The most common rule: restring as many times per year as you play per week. Play twice a week? Restring twice a year. But for polyester strings specifically, dead strings (no pop, mushy feel) should be replaced even if they haven't broken — playing with dead poly loses control benefits while keeping the arm-unfriendly stiffness.
How to Find Your Ideal Tension
Start With Your Racket's Recommended Range
Every racket has a recommended tension range printed on the frame or throat (e.g. 50–65 lbs). Never exceed the maximum — it risks permanent frame damage. Start by stringing in the middle of the range.
Use This Simple Adjustment Approach
After playing with your initial tension for a few sessions, ask yourself two questions:
Are my balls consistently landing long? Go up 2 lbs on your next restring. The string bed has too much power.
Are my shots feeling dead or lacking pace? Go down 2 lbs. You have too much control and not enough energy return.
Most players find their ideal tension within 2–3 restrings by making small adjustments each time.
Factor In the String's Stiffness
If you're switching from polyester to multifilament, go up 3–5 lbs from your poly tension. If switching from multifilament to poly, drop 3–5 lbs. The string type matters as much as the number.
Let StringMatch Help
StringMatch doesn't just recommend a string — it also suggests a starting tension based on your string type, playing style, and any arm issues. After the quiz, your results include a personalized tension range alongside your string recommendation.
Get a Personalised Tension Recommendation
The quiz recommends both your ideal string and a starting tension range. Free, takes 90 seconds.
Find my string & tension →Frequently Asked Questions
What tennis string tension should I use?
Start in the middle of your racket's recommended tension range. If your balls land long, string tighter next time. If your shots feel flat and lack power, string looser. Most recreational players benefit from lower tensions than they think — around 50–55 lbs is a good starting point for most rackets.
Does higher tension mean more power or more control?
Higher tension means more control and less power. This is counterintuitive but correct. A tighter string bed has less elasticity, so it transfers less energy to the ball. Lower tension creates a trampoline effect that adds power. Pros string lower than most people assume.
How does string tension affect arm pain?
Higher tensions transmit more shock to the arm because the strings flex less on impact. Players with tennis elbow should string at the lower end of their racket's range and switch to a soft string type (multifilament or natural gut). Dropping 5 lbs can noticeably reduce arm stress.
How quickly do strings lose tension?
Strings lose 10–15% of their tension in the first 24 hours after stringing. Polyester strings lose tension faster than multifilament with play. After 4–8 weeks of regular play, most poly strings are "dead" — no pop, no control benefit — even if they haven't broken. Restring on a schedule, not just when strings snap.
Should I string polyester strings tighter or looser than multifilament?
Looser. Polyester is a stiff material that feels tighter at the same tension compared to multifilament or natural gut. String poly 3–5 lbs lower than you would with multifilament to get a similar feel. Most advanced poly users find 48–55 lbs works well.
What tension do professional tennis players use?
Most ATP professionals use polyester strings at surprisingly low tensions — typically 48–55 lbs. The control comes from their technique and the string's stiffness, not from high tension. Recreational players often string much tighter than pros without realising it.