D'Addario · NYXL · 12-16-20-32-42-54

D'Addario NYXL1254 (12-16-20-32-42-54) in Eb standard on a 25" scale

12-54 Heavy, NYXL Electric Guitar Strings on an electric guitar with a 25" scale, tuned to Eb standard (Eb4 Bb3 Gb3 Db3 Ab2 Eb2), pulls 125.2 lb56.8 kg557 N in total and 20.9 lb9.47 kg93 N per string on average. That is a tight feel for an electric guitar. The set is even (spread 6.7%). String 4 (Db3) deviates most: +13% from the set average.

Total tension: 125.2 lb56.8 kg557 N
Average per string: 20.9 lb9.47 kg93 N
Feel: tight; medium ≈ 17.1 lb7.76 kg76 N per string; Set your own preferred feel
Balance: even; spread 6.7%

Tension per string

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.

#	Note	Hz	Gauge	Item	Type	Tension	vs avg
1	Eb4	311.1	.012	NYS012	plain	20.0 lb9.08 kg89 N	−4%
2	Bb3	233.1	.016	NYS016	plain	20.0 lb9.07 kg89 N	−4%
3	Gb3	185.0	.020	NYS020	plain	19.7 lb8.92 kg88 N	−6%
4	Db3	138.6	.032	NYNW032	wound	23.5 lb10.68 kg105 N	+13%
5	Ab2	103.8	.042	NYNW042	wound	21.9 lb9.91 kg97 N	+5%
6	Eb2	77.8	.054	NYNW054	wound	20.1 lb9.13 kg90 N	−4%
Total						125.2 lb56.8 kg557 N

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Similar sets in Eb standard, 25"

Set	Gauges	Avg per string	Total	Feel	Balance
D'Addario NYXL1156	11-14-19-32-44-56	19.8 lb8.96 kg88 N	118.5 lb53.8 kg527 N	tight	uneven
D'Addario EXL117	11-14-19-32-44-56	19.8 lb8.99 kg88 N	118.9 lb53.9 kg529 N	tight	uneven
D'Addario ECG24	11-15-22-30-40-50	20.7 lb9.37 kg92 N	123.9 lb56.2 kg551 N	tight	uneven
NYXL1254 (this page)	12-16-20-32-42-54	20.9 lb9.47 kg93 N	125.2 lb56.8 kg557 N	tight	even
D'Addario EXL145	12-16-20-32-42-54	20.9 lb9.49 kg93 N	125.5 lb56.9 kg558 N	tight	even
D'Addario NYXL1260	12-16-20-34-46-60	22.8 lb10.32 kg101 N	136.5 lb61.9 kg607 N	tight	uneven

Best match for a medium feel in Eb standard, 25"

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

D'Addario EXL115BT 11-15-19-28-37-50 deviation 3.2%, average 17.4 lb7.89 kg77 N, very even
D'Addario NYXL1149 11-14-18-28-38-49 deviation 6.4%, average 16.7 lb7.57 kg74 N, even; same gauges: EXL115
D'Addario EPN115 11-14-18-27-37-48 deviation 9.4%, average 17.4 lb7.90 kg78 N, moderately uneven

More for the NYXL1254

Other tunings on 25": E standard, Drop D, D standard, Drop C, C standard, B standard, Open G, Open D, DADGAD

Eb standard on other scales: 24.75", 25.5", 26.5", 27", 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

D'Addario product page, tension chart for NYXL1254 (2026-10-31): unit weights derived from the published tensions, cross-checked across sets.