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AWG/SWG to mm/mm2, inch/inch2 & kcmil Calculator & Conversion

AWG and SWG Size Conversion Calculator with Formula, Chart & Table

Standard Wire Gauge “SWG” Calculator

The following American Wire Gauge “AWG” and Standard Wire Gauge “SWG” calculators will calculate the wire diameter in mm, inches, wire cross sectional area in mm2, inches2 and kcmil or MCM.

To calculate the values, just select or enter the AWG/SWG size and hit the “Calculate” button to get the result of different properties of SWG/AWG cables and wires such as diameter in millimeter “mm” and inches “in”, cross-sectional area in square millimeter “mm2“, square inches “in2” and kilo Circular Mils “kcmil or MCM”.

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American Wire Gauge Conversin

Select Gauge #: 
or Enter Gauge #:AWG
      
Diameter in Millimeters:mm
Diameter in Inches:in
Cross Aectional Area in Aquare Millimeters:mm2
Cross sectional Area in Square Millimeters:inch2
Cross sectional Area in kilo Circular Mils:kcmil
Standard Wire Gauge Conversion

Select Gauge #: 
Selected Gauge #:SWG
      
Diameter in Millimeters:mm
Diameter in Inches:in
Cross Sectional Area in Square Millimeters:mm2
Cross sectional area in square millimeters:inch2
Cross Sectional Area in Square Millimeters:kcmil
Good to Know:

  • AWG or American Wire Gauge is also known as “Brown and Sharpe Wire Gauge” used in North America for wire sizing.
  • SWG or Standard Wire Gauge used for wire sizing and properties is also known as “British Standard Wire Gauge” and “British Standard Gauge” or “Imperial Wire Gauge”.

Related Calculators:

AWG-SWG Wire Size Calculator & Conversion

 

AWG/SWG Wire Diameter in mm & Inch, Area in mm2, inch2 & kcmil Calculations

The following SWG/AWG wire size conversion formulas and equation can be used to easily measure the values of wires and cables.

Wire Diameter Area in “mm” Calculation

dn = 27 x 10-3 x 92(36-n)/39

Wire Diameter in “inches” Calculation

dn = 5 x 10-3 x 92(36-n)/39

Wire Cross Sectional Area in “mm2” Calculation

An 12.668 x 10-3 x 92(36-n)/19.5

Wire Cross Sectional Area in “icnhes2” Calculation

An = 19635 x 10-6 x 92(36-n)/19.5

Wire Cross Sectional Area in “kcmil” Calculation

An = 0.025 x 92(36-n)/19.5

Where:

  • n = Number of the wire gauge size in AWG/SWG. 
  • d = The wire diameter in inches, mm, inches2, & mm2 respectively.
  • An = Cross sectional area of “n” gauge wire size in inches2, “mm2” & kcmil respectively.
  • R = Resistance of the wire in Ω/kft & Ω/km respectively.
  • ρ = rho = resistivity in (Ω·m).

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AWG/SWG “mm” & “Inches” Conversion Chart & Table

The following AWG and SWG table shows the SWG/AWG wire sizes gauge numbers and diameter in millimeter and inches, its cross-sectional area in , square millimeters , square inches, and kcmil or MCM.

AWGDiameterCross Section AreaSWGDiameterCross Section Area
mminchmm2Inch2kcmilmminchmm2Inch2kcmil
0000 (4/0)11.68400.4600107.21930.1662211.60007/012.7000.500126.67690.1963250
000 (3/0)10.40490.409685.02880.1318167.80646/011.7860.464109.09210.1691215
00 (2/0)9.26580.364867.43090.1045133.07655/010.9730.43294.56380.1466187
0 (1/0)8.25150.324953.47510.0829105.53454/010.1600.40081.07320.1257160
17.34810.289342.40770.065783.69273/09.4490.37270.12020.1087138
26.54370.257633.63080.052166.37132/08.8390.34861.36430.0951121
35.82730.229426.67050.041352.634808.2300.32453.19210.0824105
45.18940.204321.15060.032841.741317.6200.30045.60370.070790.0
54.62130.181916.77320.026033.102427.0100.27638.59890.059876.2
64.11540.162013.30180.020626.251436.4010.25232.17800.049963.5
73.66490.144310.54880.016420.818345.8930.23227.27300.042353.8
83.26360.12858.36560.013016.509755.3850.21222.77350.035344.9
92.90640.11446.63420.010313.092764.8770.19218.67930.029036.9
102.58820.10195.26120.008210.383074.4700.17615.69580.024331.0
112.30480.09074.17230.00658.234184.0640.16012.97170.020125.6
122.05250.08083.30880.00516.529993.6580.14410.50710.016320.7
131.82780.07202.62400.00415.1785103.2510.1288.30190.012916.4
141.62770.06412.08090.00324.1067112.9460.1166.81830.010613.5
151.44950.05711.65020.00263.2568122.6420.1045.48050.008510.8
161.29080.05081.30870.00202.5827132.3370.0924.28880.00668.46
171.14950.04531.03780.00162.0482142.0320.0803.24290.00506.40
181.02370.04030.82300.00131.6243161.6260.0722.07550.00415.18
190.91160.03590.65270.00101.2881151.8290.0642.62680.00324.10
200.81180.03200.51760.00081.0215171.4220.0561.58900.00253.14
210.72290.02850.41050.00060.8101181.2190.0481.16750.00182.30
220.64380.02530.32550.00050.6424191.0160.0400.81070.00131.60
230.57330.02260.25820.00040.5095200.9140.0360.65670.00101.30
240.51060.02010.20470.00030.4040210.8130.0320.51890.00081.02
250.45470.01790.16240.00030.3204220.7110.0280.39730.00060.784
260.40490.01590.12880.000250.2541230.6100.0240.29190.00050.576
270.36060.01420.10210.000200.2015240.5590.0220.24520.00040.484
280.32110.01260.08100.000130.1598250.50800.0200.20270.00030.400
290.28590.01130.06420.000100.1267260.45720.0180.16420.000250.324
300.25460.01000.05090.000080.1005270.41660.01640.13630.000210.269
310.22680.00890.04040.000060.0797280.37590.01480.11100.000170.219
320.20190.00800.03200.000050.0632290.34540.01360.09370.000140.185
330.17980.00710.02540.000040.0501300.31500.01240.07790.000120.154
340.16010.00630.02010.0000310.0398310.29460.01160.06820.000100.135
350.14260.00560.01600.0000250.0315320.27430.01080.05910.000090.117
360.12700.00500.01270.0000200.0250330.25400.01000.05070.000080.100
370.11310.00450.01000.0000160.0198340.23370.00920.04290.000070.0846
380.10070.00400.00800.0000120.0157350.21340.00840.03580.000050.0706
390.08970.00350.00630.0000100.0125360.19300.00760.02930.000040.0578
400.07990.00310.00500.0000080.0099370.17270.00680.02340.000030.0462
. . .. . .. . .. . .. . .. . .380.15240.00600.01820.0000280.0360
. . .. . .. . .. . .. . .. . .390.13210.00520.01370.0000210.0270
. . .. . .. . .. . .. . .. . .400.12190.00480.01170.000018090.0230
. . .. . .. . .. . .. . .. . .410.11180.00440.00980.000015220.0194
. . .. . .. . .. . .. . .. . .420.10160.0040.00810.000012570.0160
. . .. . .. . .. . .. . .. . .430.09140.00360.00660.000010170.0130
. . .. . .. . .. . .. . .. . .440.08130.00320.00520.000008050.0102
. . .. . .. . .. . .. . .. . .450.07110.00280.00400.000006150.00784
. . .. . .. . .. . .. . .. . .460.06100.00240.00290.000004530.00576
. . .. . .. . .. . .. . .. . .470.05080.00200.00200.000003140.00400
. . .. . .. . .. . .. . .. . .480.04060.00160.00130.000002010.00256
. . .. . .. . .. . .. . .. . .490.03050.00120.00070.000001130.00144
. . .. . .. . .. . .. . .. . .500.02540.00100.00050.000000780.00100

Here is the AWG and SWG wire size chart in image format if you need to download it for later use.

AWG-SWG mm, Inches & kcmil Conversion Chart & Table

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