String Tension Lab Calculator

D'Addario · NYXL · 12-16-20-34-46-60

D'Addario NYXL1260 (12-16-20-34-46-60) in C standard on a 25.5" scale

12-60 Extra Heavy, NYXL Electric Guitar Strings on an electric guitar with a 25.5" scale, tuned to C standard (C4 G3 Eb3 Bb2 F2 C2), pulls 100.4 lb45.6 kg447 N in total and 16.7 lb7.59 kg74 N per string on average. That is a medium feel for an electric guitar. The set is uneven (spread 12.6%). String 4 (Bb2) deviates most: +15% from the set average.

Total tension
100.4 lb45.6 kg447 N
Average per string
16.7 lb7.59 kg74 N
Feel
medium
medium ≈ 17.1 lb7.76 kg76 N per string
Set your own preferred feel
Balance
uneven
spread 12.6%

Tension per string

05101520lb02468kg020406080Nset averagemedium (10-46)1C4.01214.7 lb6.68 kg65 N2G3.01614.7 lb6.67 kg65 N3Eb3.02014.5 lb6.57 kg64 N4Bb2.03419.2 lb8.72 kg85 N5F2.04618.9 lb8.56 kg84 N6C2.06018.4 lb8.36 kg82 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
1C4261.6 .012NYS012plain 14.7 lb6.68 kg65 N−12%
2G3196.0 .016NYS016plain 14.7 lb6.67 kg65 N−12%
3Eb3155.6 .020NYS020plain 14.5 lb6.57 kg64 N−14%
4Bb2116.5 .034NYNW034wound 19.2 lb8.72 kg85 N+15%
5F287.3 .046NYNW046wound 18.9 lb8.56 kg84 N+13%
6C265.4 .060NYNW060wound 18.4 lb8.36 kg82 N+10%
Total100.4 lb45.6 kg447 N

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Similar sets in C standard, 25.5"

SetGaugesAvg per stringTotalFeelBalance
D'Addario EXL117 11-14-19-32-44-5614.6 lb6.61 kg65 N 87.5 lb39.7 kg389 Nlooseuneven
D'Addario ECG24 11-15-22-30-40-5015.2 lb6.89 kg68 N 91.2 lb41.4 kg406 Nlooseuneven
D'Addario NYXL1254 12-16-20-32-42-5415.4 lb6.96 kg68 N 92.1 lb41.8 kg410 Nlooseeven
D'Addario EXL145 12-16-20-32-42-5415.4 lb6.98 kg68 N 92.3 lb41.9 kg411 Nlooseeven
NYXL1260 (this page) 12-16-20-34-46-6016.7 lb7.59 kg74 N 100.4 lb45.6 kg447 Nmediumuneven
D'Addario EXL148 12-16-20-34-46-6016.8 lb7.62 kg75 N 100.7 lb45.7 kg448 Nmediumuneven

Best match for a medium feel in C standard, 25.5"

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

  1. D'Addario EXL145 12-16-20-32-42-54 deviation 11.7%, average 15.4 lb6.98 kg68 N, even; same gauges: NYXL1254
  2. D'Addario NYXL1260 12-16-20-34-46-60 deviation 12.6%, average 16.7 lb7.59 kg74 N, uneven; same gauges: EXL148
  3. D'Addario EXL158 13-17-26-36-46-62 deviation 15.3%, average 19.1 lb8.66 kg85 N, moderately uneven

More for the NYXL1260

Other tunings on 25.5": Eb standard, D standard, Drop C, B standard, Drop A

C standard on other scales: 24.75", 25", 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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