SWG to KG Calculator
The SWG to kg calculator helps you convert wire gauge into weight quickly and accurately. Use this tool to estimate material weight for electrical, construction, and industrial projects. It saves time, reduces errors, and improves planning efficiency.
Wire Weight Converter
How to Use SWG to KG Calculator
Follow these simple steps to use the swg to kg calculator effectively:
- 1Select the SWG (Standard Wire Gauge) number from the dropdown list.
- 2Enter the length of the wire and choose the unit (meters or feet).
- 3Choose the material type (Copper, Aluminum, or Steel) to apply the correct density.
- 4Click the "Calculate Weight" button.
- 5View the result in kilograms (kg) displayed instantly.
Pro Tips:
- Always double-check units before calculation.
- Use correct material density for accurate results.
- Longer wire length increases total weight significantly.
Conversion / Calculation Guide
How to Convert SWG to KG
You cannot convert SWG directly to kg without knowing the wire length and material material. To find the weight, you must calculate the volume of the wire and then multiply it by the density of the material.
The Formula:Where:
- Volume = π × (d / 2)² × Length
- d = wire diameter in meters
- Length = total wire length in meters
- Density = dependent on the material (e.g., Copper ≈ 8960 kg/m³)
Step-by-step Example
Example: Calculate the weight of 10 meters of 10 SWG copper wire.
1. Find diameter of 10 SWG: Diameter ≈ 3.251 mm = 0.003251 m
2. Calculate cross-sectional area: Area = π × (0.003251 / 2)² ≈ 8.30 × 10⁻⁶ m²
3. Calculate volume: Volume = Area × 10m = 8.30 × 10⁻⁵ m³
4. Apply density for Copper (8960): Weight = 8.30 × 10⁻⁵ × 8960 ≈ 0.743 kg
SWG to KG Conversion Chart
Note: Values are approximate for copper wire (per 10 meters of length).
| SWG | Diameter (mm) | Weight for 10m Copper (kg) |
|---|---|---|
| 8 | 4.06 mm | 1.16 kg |
| 10 | 3.25 mm | 0.74 kg |
| 12 | 2.64 mm | 0.49 kg |
| 14 | 2.03 mm | 0.29 kg |
| 16 | 1.63 mm | 0.19 kg |
| 18 | 1.22 mm | 0.11 kg |
| 20 | 0.91 mm | 0.06 kg |
| 22 | 0.71 mm | 0.04 kg |
Copper vs. Aluminum Conductor Sizing for SWG to KG
Choosing the correct conductor material directly affects sizing, weight, and installation cost. Copper has a higher electrical conductivity, while Aluminum is lighter and less expensive. However, aluminum has only 61% of copper's conductivity, requiring larger physical sizes:
| Material Property | Copper (Cu) | Aluminum (Al) | Sizing Impact |
|---|---|---|---|
| Resistivity (Ω·m) | 1.72 × 10⁻⁸ | 2.82 × 10⁻⁸ | Aluminum requires 1-2 sizes larger |
| Density (g/cm³) | 8.89 | 2.70 | Aluminum is ~70% lighter |
| Thermal Expansion | 16.5 × 10⁻⁶ | 23.1 × 10⁻⁶ | Aluminum requires special compression lugs |
Aluminum is widely used for major service feeders, while copper is the standard for branch circuits in SWG to KG systems due to terminal connection reliability.
FAQs – SWG to KG Calculator
Calculating the total weight of an SWG wire requires knowing its gauge, total length, and the specific density of the metal material. Utilizing an SWG to kg calculator effortlessly combines these variables to provide an immediate and highly accurate weight estimate for your electrical logistics.
Yes, the base material drastically affects the overall weight. For example, copper is significantly denser and heavier than aluminum. Therefore, a spool of copper wire will weigh substantially more than an identical spool of aluminum wire that features the exact same SWG size and overall length.
Knowing the total weight of a wire batch in kilograms is absolutely essential for calculating accurate shipping costs, planning structural load-bearing requirements, and effectively managing inventory. It also helps contractors estimate the scrap value and total material costs for large scale jobs.
An SWG to kg calculator provides a highly accurate theoretical estimate based on standard metal densities. However, minor variations in manufacturing tolerances, protective insulation layers, and precise alloy compositions can cause slight deviations from the actual physical weight of the product.
Yes, calculating stranded wire weight is more complex as you must account for the tiny air gaps located between the strands. Advanced SWG to kg calculators utilize specialized algorithms to accurately estimate the final weight for both solid and standard stranded electrical wires seamlessly.