String Tension Lab Calculator

D'Addario · XL Nickel Balanced Tension · 9-12-15-22-30-40

D'Addario EXL120BT (9-12-15-22-30-40) in E standard on a 28" scale

09-40 Super Light Balanced Tension, XL Nickel Electric Guitar Strings on an electric guitar with a 28" scale, tuned to E standard (E4 B3 G3 D3 A2 E2), pulls 95.9 lb43.5 kg427 N in total and 16.0 lb7.25 kg71 N per string on average. That is a medium feel for an electric guitar. The set is very even (spread 2.3%). String 5 (A2) deviates most: +5% from the set average.

Total tension
95.9 lb43.5 kg427 N
Average per string
16.0 lb7.25 kg71 N
Feel
medium
medium ≈ 17.1 lb7.76 kg76 N per string
Set your own preferred feel
Balance
very even
spread 2.3%

Tension per string

051015lb02468kg020406080Nset averagemedium (10-46)1E4.00915.8 lb7.17 kg70 N2B3.01215.8 lb7.18 kg70 N3G3.01515.6 lb7.07 kg69 N4D3.02216.0 lb7.28 kg71 N5A2.03016.7 lb7.59 kg74 N6E2.04015.9 lb7.22 kg71 N
The bronze dashed line is the medium-feel target: the average per-string tension of a 10-46 set on a 25.5" scale in E standard (17.1 lb7.76 kg76 N). Loose and tight are measured against it.Line thickness follows the string gauge; textured lines are wound strings. Hover, tap or tab to a string for details.
#NoteHzGaugeItemType Tensionvs avg
1E4329.6 .009PL009plain 15.8 lb7.17 kg70 N−1%
2B3246.9 .012PL012plain 15.8 lb7.18 kg70 N−1%
3G3196.0 .015PL015plain 15.6 lb7.07 kg69 N−3%
4D3146.8 .022NW022wound 16.0 lb7.28 kg71 N+0%
5A2110.0 .030NW030wound 16.7 lb7.59 kg74 N+5%
6E282.4 .040NW040wound 15.9 lb7.22 kg71 N−0%
Total95.9 lb43.5 kg427 N

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Similar sets in E standard, 28"

SetGaugesAvg per stringTotalFeelBalance
EXL120BT (this page) 9-12-15-22-30-4016.0 lb7.25 kg71 N 95.9 lb43.5 kg427 Nmediumvery even
D'Addario NYXL0942 9-11-16-24-32-4216.9 lb7.68 kg75 N 101.6 lb46.1 kg452 Nmediummoderately uneven
D'Addario EXL120 9-11-16-24-32-4217.0 lb7.70 kg75 N 101.8 lb46.2 kg453 Nmediummoderately uneven
D'Addario NYXL0946 9-11-16-26-36-4618.7 lb8.47 kg83 N 112.1 lb50.8 kg499 Ntightuneven
D'Addario EXL125 9-11-16-26-36-4618.7 lb8.49 kg83 N 112.3 lb51.0 kg500 Ntightuneven
D'Addario EPS510 10-13-17-26-36-4619.9 lb9.01 kg88 N 119.2 lb54.1 kg530 Ntighteven

Best match for a medium feel in E standard, 28"

Ranked by how close every string is to 17.1 lb7.76 kg76 N (lower deviation is better).

  1. D'Addario EXL120BT 9-12-15-22-30-40 deviation 6.8%, average 16.0 lb7.25 kg71 N, very even
  2. D'Addario NYXL0942 9-11-16-24-32-42 deviation 11.3%, average 16.9 lb7.68 kg75 N, moderately uneven; same gauges: EXL120
  3. D'Addario EPS510 10-13-17-26-36-46 deviation 17.1%, average 19.9 lb9.01 kg88 N, even; same gauges: NYXL1046, XSE1046, EXL110

More for the EXL120BT

Other tunings on 28": Drop D, Eb standard, D standard, Open G, Open D, DADGAD

E standard on other scales: 24.75", 25", 25.5", 26.5", 27", 25.5"–27" multiscale

About these numbers

Tension is calculated, not measured: T = μ · (2 · L · f)², where μ is the string's mass per unit length (unit weight), L the vibrating length (scale) and f the pitch (A4 = 440 Hz, equal temperament). kg means kilogram-force: 1 kg ≈ 9.81 N ≈ 2.205 lb.

How a set feels also depends on the guitar's setup: action height, break angle over the nut and saddle, string length behind the nut and bridge, and your playing style. Plain strings feel stiffer than wound strings at the same tension. Use these figures to compare sets, not as an absolute measure of feel.

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