String Tension Lab Calculator

D'Addario · XL Nickel Balanced Tension · 11-15-19-28-37-50

D'Addario EXL115BT (11-15-19-28-37-50) in DADGAD on a 25.5"–27" multiscale scale

11-50 Medium Balanced Tension, XL Nickel Electric Guitar Strings on an electric guitar with a 25.5"–27" multiscale scale, tuned to DADGAD (D4 A3 G3 D3 A2 D2), pulls 116.3 lb52.7 kg517 N in total and 19.4 lb8.79 kg86 N per string on average. That is a tight feel for an electric guitar. The set is uneven (spread 14.7%). String 1 (D4) deviates most: −20% from the set average.

Total tension
116.3 lb52.7 kg517 N
Average per string
19.4 lb8.79 kg86 N
Feel
tight
medium ≈ 17.1 lb7.76 kg76 N per string
Set your own preferred feel
Balance
uneven
spread 14.7%

Tension per string

01020lb025810kg0255075100Nmedium (10-46)set average1D4.01115.6 lb7.06 kg69 N2A3.01516.7 lb7.56 kg74 N3G3.01921.7 lb9.84 kg96 N4D3.02822.6 lb10.27 kg101 N5A2.03722.2 lb10.05 kg99 N6D2.05017.5 lb7.96 kg78 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
1D4293.7 .011PL011plain 25.5" 15.6 lb7.06 kg69 N−20%
2A3220.0 .015PL015plain 25.8" 16.7 lb7.56 kg74 N−14%
3G3196.0 .019PL019plain 26.1" 21.7 lb9.84 kg96 N+12%
4D3146.8 .028NW028wound 26.4" 22.6 lb10.27 kg101 N+17%
5A2110.0 .037NW037wound 26.7" 22.2 lb10.05 kg99 N+14%
6D273.4 .050NW050wound 27" 17.5 lb7.96 kg78 N−9%
Total116.3 lb52.7 kg517 N

Open in the calculator

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

Similar sets in DADGAD, 25.5"–27" multiscale

SetGaugesAvg per stringTotalFeelBalance
D'Addario NYXL1149 11-14-18-28-38-4918.6 lb8.45 kg83 N 111.8 lb50.7 kg497 Ntightuneven
D'Addario EXL115 11-14-18-28-38-4918.7 lb8.48 kg83 N 112.2 lb50.9 kg499 Ntightuneven
D'Addario NYXL1052 10-13-17-30-42-5219.3 lb8.76 kg86 N 115.9 lb52.6 kg515 Ntightuneven
D'Addario EXL140 10-13-17-30-42-5219.4 lb8.78 kg86 N 116.2 lb52.7 kg517 Ntightuneven
EXL115BT (this page) 11-15-19-28-37-5019.4 lb8.79 kg86 N 116.3 lb52.7 kg517 Ntightuneven
D'Addario EPN115 11-14-18-27-37-4819.5 lb8.85 kg87 N 117.1 lb53.1 kg521 Ntightuneven

Best match for a medium feel in DADGAD, 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 15.1%, average 16.0 lb7.27 kg71 N, uneven
  2. D'Addario EPS510 10-13-17-26-36-46 deviation 17.8%, average 15.8 lb7.15 kg70 N, uneven; same gauges: NYXL1046, XSE1046, EXL110
  3. D'Addario NYXL1149 11-14-18-28-38-49 deviation 21.2%, average 18.6 lb8.45 kg83 N, uneven; same gauges: EXL115

More for the EXL115BT

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

DADGAD 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