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 C on a 24.75" scale

11-48 Medium, XL Pure Nickel Electric Guitar Strings on an electric guitar with a 24.75" scale, tuned to Drop C (D4 A3 F3 C3 G2 C2), pulls 88.1 lb39.9 kg392 N in total and 14.7 lb6.66 kg65 N per string on average. That is a loose feel for an electric guitar. The set is moderately uneven (spread 11.4%). String 5 (G2) deviates most: +17% from the set average.

Total tension
88.1 lb39.9 kg392 N
Average per string
14.7 lb6.66 kg65 N
Feel
loose
medium ≈ 17.1 lb7.76 kg76 N per string
Set your own preferred feel
Balance
moderately uneven
spread 11.4%

Tension per string

051015lb02468kg020406080Nset averagemedium (10-46)1D4.01114.7 lb6.65 kg65 N2A3.01413.3 lb6.04 kg59 N3F3.01813.9 lb6.31 kg62 N4C3.02716.5 lb7.47 kg73 N5G2.03717.2 lb7.81 kg77 N6C2.04812.5 lb5.66 kg55 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
1D4293.7 .011PL011plain 14.7 lb6.65 kg65 N−0%
2A3220.0 .014PL014plain 13.3 lb6.04 kg59 N−9%
3F3174.6 .018PL018plain 13.9 lb6.31 kg62 N−5%
4C3130.8 .027PNG027wound 16.5 lb7.47 kg73 N+12%
5G298.0 .037PNG037wound 17.2 lb7.81 kg77 N+17%
6C265.4 .048PNG048wound 12.5 lb5.66 kg55 N−15%
Total88.1 lb39.9 kg392 N

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Similar sets in Drop C, 24.75"

SetGaugesAvg per stringTotalFeelBalance
D'Addario NYXL1149 11-14-18-28-38-4914.1 lb6.39 kg63 N 84.5 lb38.3 kg376 Nloosemoderately uneven
D'Addario EXL115 11-14-18-28-38-4914.1 lb6.40 kg63 N 84.7 lb38.4 kg377 Nloosemoderately uneven
D'Addario NYXL1052 10-13-17-30-42-5214.3 lb6.50 kg64 N 86.0 lb39.0 kg383 Nlooseuneven
D'Addario EXL140 10-13-17-30-42-5214.4 lb6.52 kg64 N 86.3 lb39.1 kg384 Nlooseuneven
EPN115 (this page) 11-14-18-27-37-4814.7 lb6.66 kg65 N 88.1 lb39.9 kg392 Nloosemoderately uneven
D'Addario EXL115BT 11-15-19-28-37-5014.7 lb6.66 kg65 N 88.1 lb40.0 kg392 Nloosemoderately uneven

Best match for a medium feel in Drop C, 24.75"

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

  1. D'Addario NYXL1254 12-16-20-32-42-54 deviation 12.2%, average 17.6 lb7.99 kg78 N, moderately uneven; same gauges: EXL145
  2. D'Addario EXL115BT 11-15-19-28-37-50 deviation 16.3%, average 14.7 lb6.66 kg65 N, moderately uneven
  3. D'Addario EPN115 11-14-18-27-37-48 deviation 17.2%, average 14.7 lb6.66 kg65 N, moderately uneven

More for the EPN115

Other tunings on 24.75": E standard, Drop D, Eb standard, D standard, Open G, Open D, DADGAD

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