Guitar String Tension Calculator
Single String Tension
Calculate tension for a single guitar string
Standard Set Tension
Estimate total tension for common string gauge sets
Formula
Tension (lbs) = (UnitWeight × (2 × ScaleLength × Frequency)²) / 386.4
Frequently Asked Questions
What string tension is ideal?
Most guitarists prefer total tension between 80-120 lbs for 6-string guitars. Lower tension (lighter gauges) is easier to bend and play, while higher tension gives more volume and sustain.
How does scale length affect tension?
Longer scale lengths increase string tension for the same gauge and tuning. A 25.5" scale guitar has about 3% more tension than a 24.75" scale at the same gauge and tuning.
What gauge should I use for drop tuning?
For drop D, go up one gauge set (e.g., 10s to 11s). For drop C or lower, consider 12-56 or heavier. Heavier gauges maintain playable tension at lower tunings.