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AWG to mm conversion

AWG to mm conversion

We have got American wire gauge (AWG) to mm and mm2 calculator, that can help you in easy conversion. Also, look at the Conversion Chart provided below.

  1. AWG to mm conversion calculator
  2. Learn to convert AWG to mm
  3. AWG to mm conversion chart

AWG to mm conversion calculator

Converts AWG to mm with few click, check now!

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Learn to convert AWG to mm

Wire diameter calculation

Let’s take n gauge wire with diameter dn in millimeters (mm) which is equal to 0.127 mm times the number 92 raised to the power of number of 36 minus the gauge number n, further divided by 39:

dn (mm) = 0.127 mm × 92(36-n)/39

 The diameter of gauge is 0.127 mm  #36.

Wire cross sectional area calculation

Let’s assume n gauge wire’s cross sectional area An measured in square millimeters (mm2) is equal to the pi divided by 4 times of the square wire diameter d measured in millimeters (mm):

An (mm2) = (π/4)×dn2 = 0.012668 mm2 × 92(36-n)/19.5

 AWG Diameter
(mm)
Diameter
(inch)
 Area
(mm2)
 0000 (4/0)  11.6840  0.4600  107.2193
 000 (3/0)  10.4049  0.4096  85.0288
 00 (2/0)  9.2658  0.3648  67.4309
 0 (1/0)  8.2515  0.3249  53.4751
 1  7.3481  0.2893  42.4077
 2  6.5437  0.2576  33.6308
 3  5.8273  0.2294  26.6705
 4  5.1894  0.2043  21.1506
 5  4.6213  0.1819  16.7732
 6  4.1154  0.1620  13.3018
 7  3.6649  0.1443  10.5488
 8  3.2636  0.1285  8.3656
 9  2.9064  0.1144  6.6342
 10  2.5882  0.1019  5.2612
 11  2.3048  0.0907  4.1723
 12  2.0525  0.0808  3.3088
 13  1.8278  0.0720  2.6240
 14  1.6277  0.0641  2.0809
 15  1.4495  0.0571  1.6502
 16  1.2908  0.0508  1.3087
 17  1.1495  0.0453  1.0378
 18  1.0237  0.0403  0.8230
 19  0.9116  0.0359  0.6527
 20  0.8118  0.0320  0.5176
 21  0.7229  0.0285  0.4105
 22  0.6438  0.0253  0.3255
 23  0.5733  0.0226  0.2582
 24  0.5106  0.0201  0.2047
 25  0.4547  0.0179  0.1624
 26  0.4049  0.0159  0.1288
 27  0.3606  0.0142  0.1021
 28  0.3211  0.0126  0.0810
 29  0.2859  0.0113  0.0642
 30  0.2546  0.0100  0.0509
 31  0.2268  0.0089  0.0404
 32  0.2019  0.0080  0.0320
 33  0.1798 0.0071  0.0254
 34  0.1601  0.0063  0.0201
 35  0.1426  0.0056  0.0160
 36  0.1270  0.0050  0.0127
 37  0.1131  0.0045  0.0100
 38  0.1007  0.0040  0.0080
39  0.0897  0.0035  0.0063
40  0.0799  0.0031  0.0050

Wire Gauze Calculator and Size Chart

American wire gauge calculator and size chart is  available here for free. Get now!

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Wire gauge calculator

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Note: 68°F or 20°C, the results may differ in reality: as it depends on the resistivity of the material used and the number of strands in a single wire.

AWG Chart 

Look up the following values in the AWG Chart, catch now!

AWG Diameter
(inch)
Diameter
(mm)
 Area
(kcmil)
Area
(mm2)
 0000 (4/0)  0.4600  11.6840  211.6000  107.2193
 000 (3/0)  0.4096  10.4049  167.8064  85.0288
 00 (2/0)  0.3648  9.2658  133.0765  67.4309
 0 (1/0)  0.3249  8.2515  105.5345  53.4751
 1  0.2893  7.3481  83.6927  42.4077
 2  0.2576  6.5437  66.3713  33.6308
 3  0.2294  5.8273  52.6348  26.6705
 4  0.2043  5.1894  41.7413  21.1506
 5  0.1819  4.6213  33.1024  16.7732
 6  0.1620  4.1154  26.2514  13.3018
 7  0.1443  3.6649  20.8183  10.5488
 8  0.1285  3.2636  16.5097  8.3656
 9  0.1144  2.9064  13.0927  6.6342
 10  0.1019  2.5882  10.3830  5.2612
 11  0.0907  2.3048  8.2341  4.1723
 12  0.0808  2.0525  6.5299  3.3088
 13  0.0720  1.8278  5.1785  2.6240
 14  0.0641  1.6277  4.1067  2.0809
 15  0.0571  1.4495  3.2568  1.6502
 16  0.0508  1.2908  2.5827  1.3087
 17  0.0453  1.1495  2.0482  1.0378
 18  0.0403  1.0237  1.6243  0.8230
 19  0.0359  0.9116  1.2881  0.6527
 20  0.0320  0.8118  1.0215  0.5176
 21  0.0285  0.7229  0.8101  0.4105
 22  0.0253  0.6438  0.6424  0.3255
 23  0.0226  0.5733  0.5095  0.2582
 24  0.0201  0.5106  0.4040  0.2047
 25  0.0179  0.4547  0.3204  0.1624
 26  0.0159  0.4049  0.2541  0.1288
 27  0.0142  0.3606  0.2015  0.1021
 28  0.0126  0.3211  0.1598  0.0810
 29  0.0113  0.2859  0.1267  0.0642
 30  0.0100  0.2546  0.1005  0.0509
 31  0.0089  0.2268  0.0797  0.0404
 32  0.0080  0.2019  0.0632  0.0320
 33  0.0071  0.1798  0.0501  0.0254
 34  0.0063  0.1601  0.0398  0.0201
 35  0.0056  0.1426  0.0315  0.0160
 36  0.0050  0.1270  0.0250  0.0127
 37  0.0045  0.1131  0.0198  0.0100
 38  0.0040  0.1007  0.0157  0.0080
 39  0.0035  0.0897  0.0125  0.0063
 40  0.0031  0.0799  0.0099  0.0050

Wire gauge calculations

Learn to make Wire Gauge Calculation here!

Wire diameter calculations

Let’s suppose the n gauge wire diameter dn measured in inches is equal to 0.005 inches times the 92 raised to the power of number 36 minus gauge n, and total divided by 39:

dn (in) = 0.005 in × 92(36-n)/39

And the n gauge wire diameter dn in measured in millimeters (mm) is equal to around 0.127 mm times the 92 raised to the power of number 36 minus gauge number n, and the total is divided by 39:

dn (mm) = 0.127 mm × 92(36-n)/39

Wire cross sectional area calculations

The number n gauge wire’s cross the sectional area An in the measure of kilo-circular mils (kcmil) is equal to around 1000 times the square wire diameter d in measure of inches (in):

An (kcmil) = 1000×dn2 = 0.025 in2 × 92(36-n)/19.5

The number n gauge wire’s cross sectional area An measured in square inches (in2) is totally equal to pi divided by the number 4 times the square wire diameter d measured in inches (in):

An (in2) = (π/4)×dn2 = 0.000019635 in2 × 92(36-n)/19.5

If the n number of gauge wire’s cross sectional area An measured in square millimeters (mm2) is totally equal to pi which is further divided by 4 times the actual square wire diameter d measured in millimeters (mm):

An (mm2) = (π/4)×dn2 = 0.012668 mm2 × 92(36-n)/19.5

Wire resistance calculations

The n number of gauge wire resistance R measured in ohms per kilofeet (Ω/kft) is totally equal to the 0.3048×1000000000 times the wire’s resistance ρ in ohm-meters (Ω·m) which is divided by 25.42 times the cross sectional area called An in square inches (in2):

Rn (Ω/kft) = 0.3048 × 109 × ρ(Ω·m) / (25.42 × An (in2))

Suppose the n gauge wire resistance R measured in ohms per kilometer (Ω/km) is equal to the 1000000000 times of the wire’s resistance ρ measured in ohm-meters (Ω·m) which is divided by the total cross sectional area An in the square millimeters (mm2):

Rn (Ω/km) = 109 × ρ(Ω·m) / An (mm2)

SWG to mm conversion

SWG to mm conversion

We are offering Standard wire gauge (SWG) to mm and mm2 conversion calculator to make you learn how to convert.

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SWG to mm conversion calculator

Converts SWG to mm, check now!

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Wire cross sectional area calculation

Let’s assume that the n gauge wire with cross sectional area An in square millimeters (mm2) is totally equal to pi divided by the 4 times of the square of wire diameter d which is measured in millimeters (mm):

An (mm2) = (π/4)×dn2

 SWG Area
(mm2)
 Diameter
(mm)
 7/0  126.6769  12.700
 6/0  109.0921  11.786
5/0  94.5638  10.973
4/0  81.0732  10.160
3/0  70.1202  9.449
2/0  61.3643  8.839
 0  53.1921  8.230
 1  45.6037  7.620
 2  38.5989  7.010
 3  32.1780  6.401
 4  27.2730  5.893
 5  22.7735  5.385
 6  18.6793  4.877
 7  15.6958  4.470
 8  12.9717  4.064
 9  10.5071  3.658
 10  8.3019  3.251
11  6.8183  2.946
12  5.4805  2.642
13  4.2888  2.337
14  3.2429  2.032
15  2.6268  1.829
16  2.0755  1.626
17  1.5890  1.422
18  1.1675  1.219
19  0.8107  1.016
20  0.6567  0.914
21  0.5189  0.813
22  0.3973  0.711
23  0.2919  0.610
24  0.2452  0.559
25 0.2027  0.5080
26  0.1642  0.4572
27  0.1363  0.4166
28  0.1110  0.3759
29  0.0937  0.3454
30  0.0779  0.3150
31  0.0682  0.2946
32  0.0591  0.2743
33  0.0507  0.2540
34  0.0429  0.2337
35  0.0358  0.2134
36  0.0293  0.1930
37  0.0234  0.1727
38  0.0182  0.1524
39  0.0137  0.1321
40  0.0117  0.1219
41  0.0098  0.1118
42  0.0081  0.1016
43  0.0066  0.0914
44  0.0052  0.0813
45  0.0040  0.0711
46  0.0029  0.0610
47  0.0020  0.0508
48  0.0013  0.0406
49  0.0007  0.0305
50  0.0005  0.0254

Voltage Drop Calculator

Voltage Drop Calculator

Wire / cable voltage drop calculator is available here for free, learn how to calculate.

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Voltage Drop Calculator

Calculates Voltage Drop at 20 degree Celsius.

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Voltage drop calculations

DC / single phase calculation

Let’s Take the voltage drop V measured in volts (V) is totally equal to the wire current I measured in amps (A) times 2 times one way of the wire length L in feet (ft) times the resistance of the wire per 1000 feet R measured in ohms (Ω/kft) and divided by 1000:

Vdrop (V) = Iwire (A) × Rwire(Ω)

= Iwire (A) × (2 × L(ft) × Rwire(Ω/kft) / 1000(ft/kft)

The voltage drop V is equal to the wire current I in amps (A) multiplied twice the wire length L measured in meters (m) and further multiplied the wire resistance per 1000 meters R measured in ohms (Ω/km) and divided by 1000:

Vdrop (V) = Iwire (A) × Rwire(Ω)

= Iwire (A) × (2 × L(m) × Rwire (Ω/km) / 1000(m/km)

3 phase calculation

The voltage drop V in volts (V) is totally equal to the square root of the 3 times of the wire current I measured in amps (A) times the 1 way wire length L measured in feet (ft) times the resistance of wire per 1000 feet R measured in ohms (Ω/kft) and divided by 1000:

Vdrop (V) = √3 × Iwire (A) × Rwire (Ω)

= 1.732 × Iwire (A) × (L(ft) × Rwire (Ω/kft) / 1000(ft/kft))

The voltage drop V in volts (V) can be calculated as the square root of 3 times the wire current I which is measured in amps (A) times one way of the wire length L in meters (m) times the resistance of wire per 1000 meters R measured in ohms (Ω/km) and divided by 1000:

Vdrop (V) = √3 × Iwire (A) × Rwire (Ω)

= 1.732 × Iwire (A) × (L(m) × Rwire (Ω/km) / 1000(m/km))

Wire diameter calculations

Assume n number of gauge wire diameter dn in inches (in) is totally equal to 0.005 in times the 92 raised to the power of number 36 minus gauge number n, and finally divided by 39:

dn (in) = 0.005 in × 92(36-n)/39

The number n gauge wire diameter dn in millimeters (mm) is totally equal to the 0.127 mm times the 92 raised to the power of 36 minus the gauge number n, and divided by 39:

dn (mm) = 0.127 mm × 92(36-n)/39

Wire cross sectional area calculations

Let’s take n gauge wire with cross sectional area An measured in kilo-circular mils (kcmil) is totally equal to 1000 times the square wire diameter d measured in inches (in):

An (kcmil) = 1000×dn2 = 0.025 in2 × 92(36-n)/19.5

The number n gauge wire with cross sectional area An is measured in square inches (in2) is actually equal to pi divided by the 4 times of the square wire with diameter d measured in inches (in):

An (in2) = (π/4)×dn2 = 0.000019635 in2 × 92(36-n)/19.5

The n gauge wire’s cross sectional area An in square millimeters (mm2) is equal to pi divided by 4 times the square wire diameter d in millimeters (mm):

An (mm2) = (π/4)×dn2 = 0.012668 mm2 × 92(36-n)/19.5

Wire resistance calculations

Assume n gauge wire with resistance R which is measured in ohms per kilofeet (Ω/kft) is totally equal to the 0.3048×1000000000 times the resistivity of the wire ρ in ohm-meters (Ω·m) and further divided by 25.42 times the cross sectional area An which is measured in square inches (in2):

Rn (Ω/kft) = 0.3048 × 109 × ρ(Ω·m) / (25.42 × An (in2))

The n gauge resistance of the wire R in ohms per kilometer (Ω/km) is totally equal to 1000000000 times the resistivity of wire ρ which is measured in ohm-meters (Ω·m) divided by the cross sectional area An in square millimeters (mm2):

Rn (Ω/km) = 109 × ρ(Ω·m) / An (mm2)

#2 Gauge Wire

#2 Gauge Wire

Get #2 American Wiring Gauge (AWG) features here including; diameter, resistance and area.

  1. #2 AWG diameter
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  3. #2 AWG area

#2 AWG wire diameter

The diameter of #2 AWG wire can be measured in inches with the following formula:

d2(inch) = 0.005 inch × 92 (36-2)/39 = 0.2576 inch

Diameter of #2 AWG wire in millimeters:

The Diameter of #2AWG wire can easily be measured in Millimeters with the following formula:

d2(mm) = 0.127 mm × 92 (36-2)/39 = 6.5437 mm

#2 AWG resistance

#2AWG Resistance can easily be found by the table provided below.

 Wire
material
Resistivity
@20ºC
(Ω×m)
Resistance
per kilofeet
@20ºC
(Ω/kft)
Resistance
per kilometer
@20ºC
(Ω/km)
 Carbon steel  1.43×10-7  1.2960  4.2521
 Copper  1.72×10-8  0.1559  0.5114
 Gold  2.44×10-8  0.2211  0.7255
 Nickel  6.99×10-8  0.6335  2.0784
 Nichrome  1.1×10-6  9.9694  32.7081
 Silver  1.59×10-8  0.1441  0.4728
 Nickel  6.99×10-8  0.6335  2.0784
 Aluminum  2.82×10-8  0.2556  0.8385

Results may differ while dealing with real wires: as it depends on the resistance of the material used and also on the number of strands in wire.

Wire’s resistance per foot

Assume the n gauge wire resistance R measured in ohms per kilofeet (Ω/kft) can easily be calculated as it equal to 0.3048×1000000000 times the resistance of the wire ρ in ohm-meters (Ω·m) and it is divided by 25.42 times the cross sectional area An in the square inches (in2):

Rn (Ω/kft) = 0.3048 × 109 × ρ(Ω·m) / (25.42 × An (in2))

Resistance per meter

Let’s Calculate the n number of gauge wire resistance R measured in ohms per kilometer (Ω/km) can easily be calculated as it is equal to 1000000000 times the resistance of the wire ρ in ohm-meters (Ω·m) and it divided by the cross sectional area Awhich is measured in square millimeters (mm2):

Rn (Ω/km) = 109 × ρ(Ω·m) / An (mm2)

#2 AWG wire area

The area of #2 AWG wire can be calculated with this easy formula in kilo-circular mils:

An (kcmil) = 1000×dn2 = 1000×(0.2576 in)2 = 66.3713 kcmil

The area of #2 AWG wire in square inches:

Use this formula to calculate the area of #2 AWG wire in square inches:

A2(inch2) = (π/4)×dn2 = (π/4)×(0.2576 in)2 = 0.0521 inch2

The area of #2 AWG wire in square millimeters:

Use this simple formula to measure the area of #2AWG wire in square millimeters:

A2(mm2) = (π/4)×dn2 = (π/4)×(6.5437 mm)2 = 33.6308 mm2