In electrical engineering, choosing the correct conductor size is essential. しかし, different regions use different measurement systems. About AWG to mm², In North America, professionals use AWG (アメリカンワイヤーゲージ). 対照的に, most international markets rely on 平方ミリメートル (mm²).
結果として, engineers, 電気技師, and buyers often need a reliable way to convert between these two systems. したがって, understanding AWG to mm² conversion becomes critical for accurate cable selection.
Here, 2本のケーブル will show how the AWG system works, why conversion matters, and how to use a complete reference table effectively.

What Does AWG Mean?
AWG stands for American Wire Gauge. It defines the diameter of electrical conductors using a standardized numerical system.
Unlike metric measurements, AWG follows a reverse scale. In other words:
- Smaller numbers indicate thicker wires
- Larger numbers indicate thinner wires
例えば, 4/0 AWG has a much larger diameter than 1 AWG. 同様に, 12 AWG is thicker than 20 AWG.
Because of this unique structure, many users find AWG confusing at first. しかし, once you understand the pattern, it becomes easier to compare wire sizes.
Why You Need AWG to mm² Conversion
In global projects, you cannot rely on a single standard. その代わり, you must switch between AWG and mm² depending on the region. このため, conversion plays a key role in several areas.
1. 国際プロジェクト
初め, different countries follow different standards. While the U.S. uses AWG, most other regions use mm². したがって, conversion ensures that specifications match across markets.
2. Current Capacity Comparison
次, the conductor area directly affects current-carrying capacity. When you convert AWG to mm², you can easily compare ampacity using IEC standards.
3. Electrical Design
加えて, most engineering calculations require metric units. 結果として, designers must convert AWG values into mm² before performing calculations.
4. Procurement and Sourcing
ついに, buyers often compare products from different suppliers. By using a conversion table, they can quickly identify equivalent cable sizes.
AWG to mm² Conversion Table
Below is a practical reference table showing conductor diameter, 断面積, and approximate copper weight:
| AWG | 直径 (んん) | エリア (mm²) | 重さ (kg/km) |
|---|---|---|---|
| 4/0 | 11.684 | 107.15 | 953 |
| 3/0 | 10.404 | 84.95 | 756 |
| 2/0 | 9.266 | 67.49 | 599 |
| 1/0 | 8.252 | 53.46 | 475 |
| 1 | 7.348 | 42.43 | 377 |
| 2 | 6.544 | 33.59 | 299 |
| 3 | 5.827 | 26.69 | 237 |
| 4 | 5.189 | 21.16 | 188 |
| 5 | 4.621 | 16.76 | 149 |
| 6 | 4.115 | 13.33 | 118 |
| 7 | 3.665 | 10.52 | 93.7 |
| 8 | 3.264 | 8.347 | 74.4 |
| 9 | 2.906 | 6.651 | 58.9 |
| 10 | 2.588 | 5.269 | 46.8 |
| 11 | 2.305 | 4.155 | 37.1 |
| 12 | 2.053 | 3.301 | 29.4 |
| 13 | 1.828 | 2.63 | 23.3 |
| 14 | 1.628 | 2.087 | 18.5 |
| 15 | 1.45 | 1.651 | 14.7 |
| 16 | 1.291 | 1.307 | 11.6 |
| 17 | 1.15 | 1.039 | 9.23 |
| 18 | 1.024 | 0.8012 | 7.32 |
| 19 | 0.912 | 0.6532 | 5.8 |
| 20 | 0.812 | 0.5166 | 4.6 |
| 21 | 0.723 | 0.4106 | 3.65 |
| 22 | 0.644 | 0.3257 | 2.89 |
| 23 | 0.573 | 0.2579 | 2.3 |
| 24 | 0.511 | 0.2051 | 1.82 |
| 25 | 0.455 | 0.1626 | 1.44 |
| 26 | 0.405 | 0.1288 | 1.14 |
| 27 | 0.361 | 0.1024 | 0.912 |
| 28 | 0.321 | 0.08093 | 0.717 |
| 29 | 0.286 | 0.0624 | 0.577 |
| 30 | 0.255 | 0.05107 | 0.451 |
| 31 | 0.227 | 0.04047 | 0.357 |
| 32 | 0.202 | 0.03205 | 0.289 |
| 33 | 0.180 | 0.02545 | 0.227 |
| 34 | 0.160 | 0.02012 | 0.179 |
| 35 | 0.143 | 0.01608 | 0.142 |
| 36 | 0.127 | 0.01267 | 0.113 |
Common Wire Size Equivalents
To simplify selection, you can remember a few key conversions. For instance:
- 12 AWG equals approximately 3.31 mm²
- 10 AWG equals about 5.26 mm²
- 8 AWG corresponds to roughly 8.37 mm²
- 6 AWG converts to 13.3 mm²
These sizes appear frequently in real applications. 例えば, they are widely used in building wiring, solar systems, and industrial installations.
How Conversion Works
You can calculate the conductor area using a basic formula:A=4π×d2
Here, d represents the conductor diameter in millimeters.
しかし, AWG follows a logarithmic progression. したがって, manual calculation is not always practical. その代わり, most professionals rely on standard tables for faster and more accurate results.
AWG and mm²: Key Differences
Although both systems measure conductor size, they serve different regions. On one hand, AWG dominates in North America. 一方で, mm² remains the global standard.
Because of this, international projects often require both systems. その結果, understanding their relationship helps prevent specification errors.

結論
Accurate wire sizing directly affects safety and performance. したがって, mastering AWG to mm² conversion is essential for engineers, manufacturers, and buyers.
By using a reliable conversion table, you can:
- Select the correct cable size
- Compare global standards efficiently
- Ensure proper current capacity
- Improve purchasing decisions
In the end, a simple conversion chart can save time, reduce errors, and improve project outcomes.