AWG - American Wire Gauge vs. Circular Mils
American Wire Gauge (AWG) is a U.S. standard for wire conductor size. The "gauge" is related to the diameter of the wire.
The AWG standard includes copper, aluminum and other wire materials. Typical household copper wiring is AWG number 12 or 14. Telephone wire is usually 22, 24, or 26. The higher the gauge number, the smaller the diameter and the thinner the wire.
The Circular Mil - CM - is a unit of area used especially to denote cross-sectional size of a wire or cable.
| American Wire Gauge (AWG) | Diameter (mils) (10-3 in) | Area (circular mils) (CM) (mil2) | Area (mm2) | Diameter (mm) |
|---|---|---|---|---|
| 0000 (4/0) | 460 | 211592 | 107 | 11.7 |
| 000 (3/0) | 410 | 167800 | 85.0 | 10.4 |
| 00 (2/0) | 365 | 133072 | 67.4 | 9.27 |
| 0 (1/0) | 325 | 105531 | 53.5 | 8.25 |
| 1 | 289 | 83690 | 42.4 | 7.35 |
| 2 | 258 | 66369 | 33.6 | 6.54 |
| 3 | 229 | 52633 | 26.7 | 5.83 |
| 4 | 204 | 41740 | 21.2 | 5.19 |
| 5 | 182 | 33101 | 16.8 | 4.62 |
| 6 | 162 | 26251 | 13.3 | 4.12 |
| 7 | 144 | 20818 | 10.5 | 3.67 |
| 8 | 128 | 16509 | 8.37 | 3.26 |
| 9 | 114 | 13092 | 6.63 | 2.91 |
| 10 | 102 | 10383 | 5.26 | 2.59 |
| 11 | 90.7 | 8234 | 4.17 | 2.31 |
| 12 | 80.8 | 6530 | 3.31 | 2.05 |
| 13 | 72.0 | 5178 | 2.62 | 1.83 |
| 14 | 64.1 | 4107 | 2.08 | 1.63 |
| 15 | 57.1 | 3257 | 1.65 | 1.45 |
| 16 | 50.8 | 2583 | 1.31 | 1.29 |
| 17 | 45.3 | 2048 | 1.04 | 1.15 |
| 18 | 40.3 | 1624 | 0.823 | 1.02 |
| 20 | 32.0 | 1022 | 0.518 | 0.812 |
| 21 | 28.5 | 810 | 0.410 | 0.723 |
| 22 | 25.3 | 642 | 0.326 | 0.644 |
| 23 | 22.6 | 510 | 0.258 | 0.573 |
| 24 | 20.1 | 404 | 0.205 | 0.511 |
| 25 | 17.9 | 320 | 0.162 | 0.455 |
Download and print AWG - Circular mils and mm2 chart
AWG to Inches
Diameter in inches can be calculated from AWG as
din = 0.005 92(36 - n)/39 (1)
where
din = diameter (inches)
n = gauge
AWG to mm
Diameter in mm can be calculated from AWG as
dmm = 0.127 92(36 - n)/39 (1b)
where
dmm = diameter (mm)
n = gauge
AWG to Inches and mm Calculator
# gauge
Related Topics
• Electrical
Electrical units, amps and electrical wiring, wire gauge and AWG, electrical formulas and motors.
Related Documents
12 Volt - Wire Gauge vs. Amps
Maximum current (amps) in a 12V electrical circuit vs. size (AWG) and length of wire.
Aluminum and Copper Wires - Electrical Resistance vs. Cross-Sectional Area
Electrical resistance in plain copper or aluminum wires.
AWG - American Wire Gauge Converting Chart
American Wire Gauge (AWG) vs. cross sectional area converter.
CM - Circular Mil Area
The circular mil area (CM) unit denotes the cross-sectional size of a wire or a cable.
Electric Cable Size vs. Current Rating
Amps vs. cable size for fixed installations in buildings.
Electric Motors - 230 & 460V Three Phase Circuits Wiring
Sizing of copper wire and transformers for three phase 230 & 460V electrical motors.
Electric Wire - Calculating Cross-Section Areas
Calculate single and bunched electric wire cross-section area and diameter.
Electric Wire - Maximum Length with 240 Volts Single-Phase Power
Maximum length of 240 V single phase electric wire with max. 2% voltage drop.
Electric Wire - Resistance
Electric resistance in wire made of Copper, Aluminum, Brass, Constantan, Nichrome, Platinum, Silver or Tungsten.
Extension Cords - Load Rating vs. Wire Gauge and Length
Size of extension cords - full load ratings with 115 V.
Smaller Circles within a Large Circle - Calculator
Calculate the number of small circles that fits into an outer larger circle - ex. how many pipes or wires fits into a larger pipe or conduit.
Standard Gauges
Standard gauges for wire and sheet - American, Birmingham, Washburn, Music, Stubs ..
SWG - Standard Wire Gauge
Imperial Standard Wire Gauge used with wire and sheet metal.
Weight vs. Gauges Chart
Gauge and weight chart for sheet steel, galvanized steel, stainless steel, aluminum and strip & tubing.
Wire Size - Area to Diameter Converter
Convert wire area from square mm to diameter mm.