String Tension Lab Calculator

D'Addario · ProSteels · 10-13-17-26-36-46

D'Addario EPS510 (10-13-17-26-36-46) in Drop C on a 27" scale

10-46 Regular Light, XL ProSteels Electric Guitar Strings on an electric guitar with a 27" scale, tuned to Drop C (D4 A3 F3 C3 G2 C2), pulls 85.1 lb38.6 kg378 N in total and 14.2 lb6.43 kg63 N per string on average. That is a loose feel for an electric guitar. The set is moderately uneven (spread 10.6%). String 6 (C2) deviates most: −21% from the set average.

Total tension
85.1 lb38.6 kg378 N
Average per string
14.2 lb6.43 kg63 N
Feel
loose
medium ≈ 17.1 lb7.76 kg76 N per string
Set your own preferred feel
Balance
moderately uneven
spread 10.6%

Tension per string

051015lb02468kg020406080Nset averagemedium (10-46)1D4.01014.4 lb6.54 kg64 N2A3.01313.7 lb6.22 kg61 N3F3.01714.8 lb6.71 kg66 N4C3.02615.1 lb6.87 kg67 N5G2.03615.9 lb7.19 kg71 N6C2.04611.2 lb5.07 kg50 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 .010PL010plain 14.4 lb6.54 kg64 N+2%
2A3220.0 .013PL013plain 13.7 lb6.22 kg61 N−3%
3F3174.6 .017PL017plain 14.8 lb6.71 kg66 N+4%
4C3130.8 .026PSG026wound 15.1 lb6.87 kg67 N+7%
5G298.0 .036PSG036wound 15.9 lb7.19 kg71 N+12%
6C265.4 .046PSG046wound 11.2 lb5.07 kg50 N−21%
Total85.1 lb38.6 kg378 N

Open in the calculator

Similar sets in Drop C, 27"

SetGaugesAvg per stringTotalFeelBalance
EPS510 (this page) 10-13-17-26-36-4614.2 lb6.43 kg63 N 85.1 lb38.6 kg378 Nloosemoderately uneven
D'Addario EXL110BT 10-13.5-17-25-34-4614.4 lb6.54 kg64 N 86.6 lb39.3 kg385 Nloosemoderately uneven
D'Addario NYXL1046 10-13-17-26-36-4614.7 lb6.65 kg65 N 88.0 lb39.9 kg392 Nloosemoderately uneven
D'Addario XSE1046 10-13-17-26-36-4614.7 lb6.65 kg65 N 88.0 lb39.9 kg392 Nloosemoderately uneven
D'Addario EXL110 10-13-17-26-36-4614.7 lb6.67 kg65 N 88.2 lb40.0 kg392 Nloosemoderately uneven
D'Addario NYXL1149 11-14-18-28-38-4916.8 lb7.60 kg75 N 100.5 lb45.6 kg447 Nmediummoderately uneven

Best match for a medium feel in Drop C, 27"

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 9.8%, average 17.5 lb7.93 kg78 N, moderately uneven
  2. D'Addario NYXL1149 11-14-18-28-38-49 deviation 10.9%, average 16.8 lb7.60 kg75 N, moderately uneven; same gauges: EXL115
  3. D'Addario EPN115 11-14-18-27-37-48 deviation 11.9%, average 17.5 lb7.92 kg78 N, moderately uneven

More for the EPS510

Other tunings on 27": E standard, Drop D, Eb standard, D standard, Open G, Open D, DADGAD

Drop C on other scales: 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