String Tension Lab Calculator

D'Addario · Pure Nickel · 11-14-18-27-37-48

D'Addario EPN115 (11-14-18-27-37-48) in Drop D on a 25.5"–27" multiscale scale

11-48 Medium, XL Pure Nickel Electric Guitar Strings on an electric guitar with a 25.5"–27" multiscale scale, tuned to Drop D (E4 B3 G3 D3 A2 D2), pulls 124.9 lb56.6 kg556 N in total and 20.8 lb9.44 kg93 N per string on average. That is a tight feel for an electric guitar. The set is uneven (spread 12.6%). String 5 (A2) deviates most: +21% from the set average.

Total tension
124.9 lb56.6 kg556 N
Average per string
20.8 lb9.44 kg93 N
Feel
tight
medium ≈ 17.1 lb7.76 kg76 N per string
Set your own preferred feel
Balance
uneven
spread 12.6%

Tension per string

01020lb0510kg050100Nmedium (10-46)set average1E4.01119.6 lb8.90 kg87 N2B3.01418.2 lb8.27 kg81 N3G3.01819.5 lb8.85 kg87 N4D3.02723.6 lb10.70 kg105 N5A2.03725.2 lb11.45 kg112 N6D2.04818.7 lb8.48 kg83 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 Length Tensionvs avg
1E4329.6 .011PL011plain 25.5" 19.6 lb8.90 kg87 N−6%
2B3246.9 .014PL014plain 25.8" 18.2 lb8.27 kg81 N−12%
3G3196.0 .018PL018plain 26.1" 19.5 lb8.85 kg87 N−6%
4D3146.8 .027PNG027wound 26.4" 23.6 lb10.70 kg105 N+13%
5A2110.0 .037PNG037wound 26.7" 25.2 lb11.45 kg112 N+21%
6D273.4 .048PNG048wound 27" 18.7 lb8.48 kg83 N−10%
Total124.9 lb56.6 kg556 N

Open in the calculator

Multiscale (fanned frets): string lengths change linearly from 25.5" (treble) to 27" (bass).

Similar sets in Drop D, 25.5"–27" multiscale

SetGaugesAvg per stringTotalFeelBalance
D'Addario NYXL1149 11-14-18-28-38-4919.9 lb9.04 kg89 N 119.6 lb54.3 kg532 Ntightmoderately uneven
D'Addario EXL115 11-14-18-28-38-4920.0 lb9.07 kg89 N 120.0 lb54.4 kg534 Ntightmoderately uneven
D'Addario NYXL1052 10-13-17-30-42-5220.4 lb9.26 kg91 N 122.5 lb55.5 kg545 Ntightuneven
D'Addario EXL140 10-13-17-30-42-5220.5 lb9.28 kg91 N 122.8 lb55.7 kg546 Ntightuneven
D'Addario EXL115BT 11-15-19-28-37-5020.8 lb9.42 kg92 N 124.6 lb56.5 kg554 Ntightmoderately uneven
EPN115 (this page) 11-14-18-27-37-4820.8 lb9.44 kg93 N 124.9 lb56.6 kg556 Ntightuneven

Best match for a medium feel in Drop D, 25.5"–27" multiscale

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

  1. D'Addario EXL110BT 10-13.5-17-25-34-46 deviation 7.6%, average 17.2 lb7.79 kg76 N, moderately uneven
  2. D'Addario EPS510 10-13-17-26-36-46 deviation 10.4%, average 16.9 lb7.65 kg75 N, moderately uneven; same gauges: NYXL1046, XSE1046, EXL110
  3. D'Addario EXL120 9-11-16-24-32-42 deviation 20.2%, average 14.4 lb6.53 kg64 N, uneven; same gauges: NYXL0942

More for the EPN115

Other tunings on 25.5"–27" multiscale: E standard, Eb standard, D standard, Drop C, C standard, Open G, Open D, DADGAD

Drop D on other scales: 24.75", 25", 25.5", 26.5", 27", 28"

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.

Sources