Guitar String Tension Calculator
Calculate string tension for optimal guitar setup and playing comfort
Calculate String Tension
Distance from nut to bridge
Target frequency: 329.60 Hz
String thickness/diameter
Material affects string density
Advanced Settings
String Tension Results
Formula: T = (f × 2 × L)² × μ / g
Calculation: T = (329.6 × 2 × 25.50)² × 0.00002215 / 386.09
Where: f = frequency, L = scale length, μ = unit weight, g = gravitational constant
Common String Set Gauges
| Set Type | Gauges (inches) | Typical Tension |
|---|---|---|
| Extra Light | 0.010, 0.014, 0.023, 0.030, 0.039, 0.047 | 14-18 lbs |
| Light | 0.012, 0.016, 0.024, 0.032, 0.042, 0.054 | 16-20 lbs |
| Medium | 0.013, 0.017, 0.026, 0.035, 0.045, 0.056 | 18-22 lbs |
| Heavy | 0.014, 0.018, 0.027, 0.039, 0.049, 0.059 | 20-25 lbs |
Note: Tension values are approximate for 25.5" scale length in standard tuning.
Quick Presets
Setup Tips
Balanced tension across all strings improves playability
Higher tension = brighter tone, more sustain
Lower tension = easier bending, warmer tone
Consider your playing style when choosing gauge
Shorter scale length = lower tension for same pitch
Tension Guidelines
Understanding Guitar String Tension
What is String Tension?
String tension is the force required to stretch a guitar string to a specific pitch. It's measured in pounds (lbs) or kilograms and affects playability, tone, and the overall feel of the instrument.
Factors Affecting Tension
- •Scale Length: Longer scales need more tension
- •String Gauge: Thicker strings need more tension
- •Frequency: Higher pitches need more tension
- •Material: Density affects tension requirements
Tension Formula
T = (f × 2 × L)² × μ / g
- T: String tension (lbs)
- f: Frequency (Hz)
- L: Scale length (inches)
- μ: Unit weight (lb/in)
- g: Gravitational acceleration (386.09 in/s²)
Note: This formula assumes the string behaves as an ideal vibrating string under tension, which is accurate for most guitar applications.
Practical Applications
Balanced Tension Sets
Use calculated tensions to create string sets with similar tension across all strings. This improves playability and makes barre chords easier to fret.
Setup Optimization
Adjust string gauge and scale length to achieve desired tension for your playing style. Lower tension for easier bending, higher tension for more sustain and clarity.