Gauge to Inches to Millimeters 
AWG
Gauge
Inch
(Decimal)
Millimeter
(mm)
Inch
(Fraction)
 AWG
Gauge
Inch
(Decimal)
Millimeter
(mm)
Inch
(Fraction)
10.2897.348.170.0451.149.
20.2586.543.180.0401.024.
.0.2506.3501/4190.0360.912.
.0.2345.95315/64200.0320.812.
30.2295.827..0.0310.7951/32
.0.2195.5567/32210.0280.723.
40.2045.189.220.0250.644.
.0.2035.15411/64230.0230.573.
.0.1884.7623/16240.0200.511.
50.1824.621.250.0180.455.
.0.1724.36611/64260.0160.405.
60.1624.115..0.0160.3961/64
.0.1563.9695/32270.0140.360.
70.1443.664.280.0130.321.
.0.1413.5729/64290.0110.286.
80.1283.263.300.0100.255.
.0.1253.1751/8310.00890.226.
90.1142.906.320.00800.200.
.0.1092.7787/64330.00710.180.
100.1022.588.340.00630.160.
.0.0942.3813/32350.00560.142.
110.0912.304.360.00500.130.
120.0812.052.370.00450.114.
.0.0781.9845/64380.00400.100.
130.0721.828.....
140.0641.628.....
.0.0631.5881/16....
150.0571.449.....
160.0511.291.....
.0.0471.1913/64....


Select the Gauge of wire:

Gauge Script C/O Online Conversion


Washburn &
Moen


British Imperial
Standard (S.W.G.)

in.
mm
in.
mm


Birmingham /
Stubs

[ Table ]
American (A.W.G.) /
Brown & Sharpe

in.
mm
in.
mm

Recommended Cable Size by Power and Distance
Total
RMS
Distance
1M2M3M4M5M
100 W10 AWG10 AWG8 AWG8 AWG4 AWG
200 W10 AWG8 AWG8 AWG4 AWG4 AWG
400 W8 AWG8 AWG4 AWG4 AWG4 AWG
600 W8 AWG4 AWG4 AWG4 AWG4 AWG
800 W4 AWG4 AWG4 AWG2 AWG2 AWG
1000 W4 AWG4 AWG2 AWG2 AWG2 AWG
1400 W4 AWG2 AWG2 AWG2 AWG2 AWG
 
Current Draw by Amp
Total RMS Amps
100 W16A
200 W32A
400 W64A
600 W96A
800 W128A
1000 W160A
1200 W172A
1400 W188A
Power Cable Specs
Cable SizeCapacity
1/0 AWG350A
2 AWG225A
4 AWG150A
8 AWG100A
10 AWG60A
12 AWG40A
14 AWG25A
16 AWG15A
 


Maximum Wire Lengths For TWO CONDUCTOR Copper Wire

Wire Size

2 ohm load

4 ohm load

6 ohm load

8 ohm load

22 AWG

3 feet max

6 feet max

9 feet max

12 feet max

20 AWG

5 feet max

10 feet max

15 feet max

20 feet max

18 AWG

8 feet max

16 feet max

24 feet max

32 feet max

16 AWG

12 feet max

24 feet max

36 feet max

48 feet max

14 AWG

20 feet max

40 feet max

60 feet**

80 feet**

12 AWG

30 feet max

60 feet**

90 feet**

120  feet**

10 AWG

50 feet max

100 feet**

150 feet**

200 feet**

 This return considered, as in speaker runs (Each for stereo pair)

For example: you can use#18 wire for a 25 foot run to a nominal 8 ohm speaker, but if the run is increased to 35 feet, #16 wire must be used. (**) 50 feet is the maximum recommended length for normal line cord or Oxygen-Free copper wire.

 

SCREW GAUGE

Woodscrews are gauged by screw gauge
Where the bigger the number, the bigger the screw

Wood Screw Data
Nominal DiameterClearancePilot Hole
GaugeDecimal inchmmHoleHardwoodSoftwoodMetal

2

.082

2.08

3/32

1/16

-

-

3

.094

2.39

3/32

1/16

-

-

4

.108

2.74

7/64

1/16

-

5/64

5

.122

3.10

1/8

5/64

-

-

6

.136

3.45

9/64

3/32

1/16

3/32

7

.150

3.81

5/32

3/32

1/16

-

8

.164

4.17

11/64

3/32

5/64

7/64” or 1/8

9

.178

4.52

3/16

7/64

5/64

-

10

.192

4.88

13/64

7/64

5/64

9/64” or 5/32

12

.220

5.59

15/64

1/8

3/32

11/64” or 3/16

14

.248

6.30

1/4

9/64

7/64

13/64” or 7/32

16

.276

7.01

9/32

5/32

1/8

-

18

.304

7.72

5/16

11/64

1/8

-

20

.332

8.43

11/32

3/16

9/64

-

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