String gauge conversion

String Gauge calculator for Lute, Harps, Guitar, Viola da Gamba…

AQUILA NEW NYLGUT CODES	NEW NYLGUT GUT EQUIVALENT / ACTUAL GAUGE	NYLON GAUGES	CARBON GAUGES
36NNG	0.36 mm	0.40 mm	0.30 mm
38NNG	0.38 mm	0.42 mm	0.32 mm
40NNG	0.40 mm	0.44 mm	0.34 mm
42NNG	0.42 mm	0.46 mm	0.36 mm
44NNG	0.44 mm	0.48 mm	0.375 mm
46NNG	0.46 mm	0.51 mm	0.39 mm
48NNG	0.48 mm	0.53 mm	0.41 mm
50NNG	0.50 mm	0.55 mm	0.43 mm
52NNG	0.52 mm	0.57 mm	0.44 mm
54NNG	0.54 mm	0.59 mm	0.46 mm
56NNG	0.56 mm	0.62 mm	0.475 mm
58NNG	0.58 mm	0.64 mm	0.49 mm
60NNG	0.60 mm	0.66 mm	0.51 mm
62NNG	0.62 mm	0.68 mm	0.525 mm
64NNG	0.64 mm	0.70 mm	0.54 mm
66NNG	0.66 mm	0.73 mm	0.56 mm
68NNG	0.68 mm	0.75 mm	0.58 mm
70NNG	0.70 mm	0.77 mm	0.60 mm
73NNG	0.73 mm	0.80 mm	0.62 mm
76NNG	0.76 mm	0.84 mm	0.64 mm
79NNG	0.79 mm	0.88 mm	0.67 mm
82NNG	0.82 mm	0.91 mm	0.70 mm
85NNG	0.85 mm	0.94 mm	0.72 mm
88NNG	0.88 mm	0.97 mm	0.75 mm
91NNG	0.91 mm	1.00 mm	0.78 mm
94NNG	0.94 mm	1.04 mm	0.80 mm
97NNG	0.97 mm	1.07 mm	0.82 mm
100NNG	1.00 mm	1.11 mm	0.85 mm
104NNG	1.04 mm	1.15 mm	0.88 mm
108NNG	1.08 mm	1.20 mm	0.92 mm
112 NNG	1.12 mm	1.24 mm	0.95 mm

PYRAMID CODE	AQUILA “D” WOUND STRINGS	AQUILA “CD” SYNTHETIC LOADED STRINGS
905/1013AL	73D	75CD
906M/1014AL	76D	75CD
906	79D	80CD
1006/10065	82D	80CD
9075	85D	85CD
908/1007	88D	90CD
1008/10075	91D	90CD
909/9085	94D	95CD
1009/10085	97D	95CD
10095	100D	100CD
1010	104D	105CD
1011	108D	110CD
10105	112D	110CD
1012	116D	115CD
1013/1014	120D	120CD
–	124D	125CD
1015	128D	130CD
1016	132D	130CD
–	136D	135CD
1017	140D	140CD
1018	145D	145CD
1019	150D	150CD
1020	155D	155CD
1021	160D	160CD
1022/1023	165D	165CD
1024	170D	170CD
1025	175D	175CD
1076	180D	180CD
1027	185D	185CD
1028	190D	190CD
1029	195D	195CD
1030/1031	200D	200CD
1032/1033	210D	210CD
1034/1035	220D	220CD
1036/1037	230D
1038	240D
1239	245D
1240	250D
1440/1441	260D

Since March 2019, wound D strings are produced starting from gauge 100D only.