AWG to SWG & SWG to AWG Calculator
The AWG to SWG calculator helps you quickly convert American Wire Gauge values into Standard Wire Gauge sizes. It removes confusion when working with different wire standards. Use this tool to ensure accurate wire selection for electrical and engineering tasks.
How to Use AWG to SWG Calculator
Follow these simple steps to use the awg to swg calculator:
- 1Enter the AWG value: Input the wire size in American Wire Gauge (AWG).
- 2Click the calculate button: The tool instantly processes the value.
- 3View the SWG result: The calculator displays the closest equivalent Standard Wire Gauge (SWG).
- 4Verify the result: Check the converted value for accuracy in your application.
- Always confirm wire diameter when precision matters.
- Use the calculator for quick reference during electrical work.
Conversion / Calculation Guide
How to Convert AWG to SWG Manually
AWG and SWG use different measurement systems. You cannot directly convert them using a simple formula. Instead, you compare wire diameters.
Follow these steps:
- Find the AWG wire diameter: Example: 10 AWG = 2.588 mm
- Check the SWG chart: Look for the closest diameter value.
- Match the nearest SWG size: 2.588 mm is closest to SWG 10 (≈ 3.251 mm) or SWG 11 (≈ 2.946 mm)
- Choose the closest match: SWG 11 is closer to 2.588 mm
Example Calculation
Convert 12 AWG to SWG:
Step 1: Find diameter
12 AWG = 2.053 mm
Step 2: Compare with SWG values
- SWG 13 = 2.337 mm
- SWG 14 = 2.032 mm
Step 3: Select closest value
2.053 mm is closest to 2.032 mm
Final Answer:
12 AWG ≈ 14 SWG
AWG to SWG Conversion Chart
| AWG | Diameter (mm) | Closest SWG | SWG Diameter (mm) |
|---|---|---|---|
| 6 | 4.115 | 8 | 4.064 |
| 8 | 3.264 | 10 | 3.251 |
| 10 | 2.588 | 11 | 2.946 |
| 12 | 2.053 | 14 | 2.032 |
| 14 | 1.628 | 16 | 1.626 |
| 16 | 1.291 | 18 | 1.219 |
| 18 | 1.024 | 19 | 1.016 |
| 20 | 0.812 | 21 | 0.813 |
| 22 | 0.644 | 23 | 0.610 |
| 24 | 0.511 | 25 | 0.508 |
Note: Values are approximate. Always verify exact specifications for critical applications.
How to Convert SWG to AWG
Look up the diameter of the SWG size in the British Standard Wire Gauge table, then find the AWG size with the closest diameter. The two systems use different steps, so most sizes only have a near match.
Example: 14 SWG is 2.032 mm, which is closest to 12 AWG (2.053 mm).
| SWG | Diameter (mm) | Nearest AWG |
|---|---|---|
| 8 | 4.064 | 6 |
| 10 | 3.251 | 8 |
| 12 | 2.642 | 10 |
| 14 | 2.032 | 12 |
| 16 | 1.626 | 14 |
| 18 | 1.219 | 17 |
| 20 | 0.914 | 19 |
FAQs About AWG to SWG Calculator
American Wire Gauge is the predominant standard used throughout North America, whereas Standard Wire Gauge, also known as Imperial Wire Gauge, is historically popular in the United Kingdom and affiliated regions. Their numbering scales differ slightly in physical measurements.
While they might appear similar, a specific gauge number in SWG often corresponds to a slightly different physical thickness than the identical number in AWG. You must precisely convert the dimensions to ensure the replacement wire can safely handle the required electrical load.
They are not identical. A solid 12 AWG wire features a diameter of approximately 2.05 millimeters, whereas a solid 12 SWG wire is slightly thicker at about 2.64 millimeters. This physical discrepancy means the SWG wire can technically carry slightly more electrical current.
Both measurement systems share a counterintuitive structural design where a larger gauge number represents a noticeably thinner wire. For example, in both the AWG and SWG standardization systems, a 20 gauge wire is significantly thinner and less capable than a 10 gauge wire.
The dual standards exist entirely due to regional industrial history. The United States heavily invested in building out the AWG infrastructure, while the British Empire spread the SWG standard. Today, both are still widely utilized in their respective geographic territories.
You can accurately convert Standard Wire Gauge (SWG) to American Wire Gauge (AWG) by referencing a cross-conversion table or using a specialized online calculator. These handy tools quickly match the corresponding physical diameters to ensure your electrical specifications are perfectly aligned.
