Calculator
Plotly Graph
The graph shows how displayed mass changes with total wire length.
Example Data Table
| Case | Input Mode | Size | Length | Strands | Quantity | Density | Estimated Mass |
|---|---|---|---|---|---|---|---|
| Example 1 | AWG | 12 AWG | 100 m | 1 | 1 | 8.96 g/cm³ | ≈ 2.97 kg |
| Example 2 | Diameter | 1.8 mm | 250 m | 2 | 3 | 8.96 g/cm³ | Depends on waste setting |
| Example 3 | Area | 4 mm² | 500 ft | 4 | 2 | 8.96 g/cm³ | Useful for cable planning |
Formula Used
Volume = Cross-sectional Area × Length
Mass = Volume × Density
Round Wire Area = π × d² ÷ 4
Total Mass = Mass per Conductor × Strands × Quantity × (1 + Waste %)
When AWG is selected, diameter is derived first, then area and mass are computed from that equivalent circular size.
How to Use This Calculator
- Select an input method: AWG, diameter, or cross-sectional area.
- Enter wire length and choose its unit.
- Add number of conductors per cable and cable quantity.
- Confirm copper density or override it if needed.
- Add optional waste percentage and cost per kilogram.
- Press Calculate Mass to show results above the form.
- Use CSV or PDF buttons to export the current result set.
Frequently Asked Questions
1) What does this copper wire mass calculator compute?
It estimates copper wire mass from length, size, density, strand count, and quantity. It also adds waste allowance and optional cost estimation for project planning.
2) Can I enter AWG instead of diameter?
Yes. Choose AWG mode, enter the gauge, and the calculator converts that gauge to an equivalent diameter before computing area, volume, and mass.
3) Which density should I use for copper?
Annealed copper is commonly taken as 8.96 g/cm³ or about 8960 kg/m³. You can override the value if your material specification lists a different density.
4) Does this work for multi-core cables?
Yes. Use the conductors per cable field for strand count and the cable quantity field for total identical cable runs. The calculator multiplies mass accordingly.
5) Why add a waste allowance?
Waste allowance accounts for trimming, routing losses, installation slack, and offcuts. It helps turn theoretical mass into a more practical procurement estimate.
6) Is mass the same as weight?
Not exactly. Mass measures matter quantity, while weight depends on gravity. In everyday engineering purchasing, mass and weight are often used interchangeably for materials.
7) Can I use area input from datasheets?
Yes. If a datasheet gives conductor area directly, choose area mode. That avoids converting from diameter or AWG and usually matches catalog values better.
8) What is the best unit for export and reporting?
Use kilograms for procurement and engineering summaries. Use grams for small samples and pounds or ounces when matching imperial purchasing practices.