String Tension Lab Calculator

D'Addario · NYXL · 11-14-18-28-38-49

D'Addario NYXL1149 (11-14-18-28-38-49) in Drop C on a 26.5" scale

11-49 Medium, NYXL Electric Guitar Strings on an electric guitar with a 26.5" scale, tuned to Drop C (D4 A3 F3 C3 G2 C2), pulls 96.9 lb43.9 kg431 N in total and 16.1 lb7.32 kg72 N per string on average. That is a medium feel for an electric guitar. The set is moderately uneven (spread 10.9%). String 6 (C2) deviates most: −20% from the set average.

Total tension
96.9 lb43.9 kg431 N
Average per string
16.1 lb7.32 kg72 N
Feel
medium
medium ≈ 17.1 lb7.76 kg76 N per string
Set your own preferred feel
Balance
moderately uneven
spread 10.9%

Tension per string

05101520lb02468kg020406080Nset averagemedium (10-46)1D4.01116.8 lb7.63 kg75 N2A3.01415.3 lb6.93 kg68 N3F3.01816.0 lb7.24 kg71 N4C3.02818.0 lb8.17 kg80 N5G2.03817.9 lb8.13 kg80 N6C2.04912.9 lb5.84 kg57 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 .011NYS011plain 16.8 lb7.63 kg75 N+4%
2A3220.0 .014NYS014plain 15.3 lb6.93 kg68 N−5%
3F3174.6 .018NYS018plain 16.0 lb7.24 kg71 N−1%
4C3130.8 .028NYNW028wound 18.0 lb8.17 kg80 N+12%
5G298.0 .038NYNW038wound 17.9 lb8.13 kg80 N+11%
6C265.4 .049NYNW049wound 12.9 lb5.84 kg57 N−20%
Total96.9 lb43.9 kg431 N

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Similar sets in Drop C, 26.5"

SetGaugesAvg per stringTotalFeelBalance
NYXL1149 (this page) 11-14-18-28-38-4916.1 lb7.32 kg72 N 96.9 lb43.9 kg431 Nmediummoderately uneven
D'Addario EXL115 11-14-18-28-38-4916.2 lb7.34 kg72 N 97.1 lb44.0 kg432 Nmediummoderately uneven
D'Addario NYXL1052 10-13-17-30-42-5216.4 lb7.46 kg73 N 98.6 lb44.7 kg439 Nmediumuneven
D'Addario EXL140 10-13-17-30-42-5216.5 lb7.48 kg73 N 98.9 lb44.9 kg440 Nmediumuneven
D'Addario EPN115 11-14-18-27-37-4816.8 lb7.63 kg75 N 100.9 lb45.8 kg449 Nmediummoderately uneven
D'Addario EXL115BT 11-15-19-28-37-5016.8 lb7.63 kg75 N 101.0 lb45.8 kg449 Nmediummoderately uneven

Best match for a medium feel in Drop C, 26.5"

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

  1. D'Addario EXL115BT 11-15-19-28-37-50 deviation 9.4%, average 16.8 lb7.63 kg75 N, moderately uneven
  2. D'Addario EPN115 11-14-18-27-37-48 deviation 11.4%, average 16.8 lb7.63 kg75 N, moderately uneven
  3. D'Addario EXL115 11-14-18-28-38-49 deviation 11.7%, average 16.2 lb7.34 kg72 N, moderately uneven; same gauges: NYXL1149

More for the NYXL1149

Other tunings on 26.5": E standard, Drop D, Eb standard, D standard, C standard, Open G, Open D, DADGAD

Drop C on other scales: 24.75", 25", 25.5", 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.

Sources