Metric & AWG Wire Size Equivalents - Conversion Table
Metric: Europe wire & cable sizes are expressed in cross sectional area in mm2. Also as the number of strands of wires of a diameter expressed in mm.
AWG: America the commonest system is the AWG numbering system, where the numbers are applied not only to individual strands but also to equivalent size bunches of smaller strands.
As standard metric wire sizes commonly used in manufacture do not generally correspond exactly with American wire size, some stranding configurations do not have equivalents in practice. For the same reason, some approximations have to be adopted if an equivalents table is not too become to complicated.
The table below provides a cross reference of closest equivalents of the wires most commonly found.
| Cross Sectional Area mm2 | Cross Sectional area AWG Reference | Metric Stranding | AWG Stranding | AWG Stranding (INCHES) | Approx. Conductor Resistance (ohms/km) |
| 0.032 | 32 | 1/0.2, 7/0.08 | 1/32, 7/40, 19/44 | 1/0.008", 7/0.003" | 578 |
| 0.051 | 30 | 1/0.25, 7/0.1 | 1/30, 7/38, 19/42 | 2 1/0,01", 7/0.004" | 350 |
| 0.081 | 28 | 1/0.315, 7/0.125 | 1/28, 7/36, 19/40 | 1/0.013", 7/0.005" | 232 |
| 0.128 | 26 | 1/0.4, 7/0.15, 19/0.1 | 1/26, 7/34, 19/38 | 1/0.016", 7/0.006" | 146 |
| 0.163 | 25 | 14/0.12 | 1/25 | - | 110 |
| 0.22 | 24 | 1/0.5, 7/0.2, 19/0.12, 30/0.1 | 1/24, 7/32, 19/36 | 1/0.02", 7/0.008", 19/0.005" | 76.4 |
| 0.25 | 23 | 1/0.6, 14/0.15, 32/0.1 | 1/23 | - | 70.1 |
| 0.32 | 22 | 7/0.25, 19/0.15, 30/0.12 | 1/22, 7/30, 19/34 | 1/0.25", 7/0.01", 19/0.006" | 54.8 |
| 0.41 | 21 | 13/0.2, 55/0.1 | 14/36 | 14/0.008" | 44 |
| 0.52 | 20 | 16/0.2, 44/0.12 | 1/20, 7/28, 19/32 | 1/0.032", 7/0.013", 19/0.008" | 34.5 |
| 0.75 | 18 | 19/0.25, 24/0.2, 96/0.1 | 1/18, 19/30, 33/32 | 1/0.04", 19/0.01", 33/0.0008" | 23 |
| 1.32 | 16 | 19/0.3 | 7/24, 19/29 | 7/0.02", 19/0.011" | 14.7 |
| 2.08 | 14 | 28/0.3 | 19/27, 73/32 | 19/0.014", 70/0.008" | 8.8 |
| 2.5 | 13 | 50/0.25, 140/0.15 | 35/28 | 35/0.013" | 6.8 |
| 4.0 | 11 | 56/0.3, 512/0.1 | - | - | 4.5 |
