Harness Weight Calculator for Wire, Connector, and Assembly Mass
Estimate total wire harness weight from wire gauge, insulation, shielding, connector weight, and run length before BOM and release handoff.
Harness Configuration
Thin-wall cross-linked polyethylene
Standard automotive
Results
Configure your harness and click Calculate
Wire Gauge Weight Reference (Copper)
| AWG | Area (mm2) | Copper (g/m) | MIL-SPEC (g/m) | Tefzel (g/m) | TXL (g/m) | PVC (g/m) |
|---|---|---|---|---|---|---|
| 10 AWG | 5.260 | 48.0 | 55.2 | 56.6 | 60.0 | 67.2 |
| 12 AWG | 3.310 | 30.0 | 34.5 | 35.4 | 37.5 | 42.0 |
| 14 AWG | 2.080 | 19.0 | 21.8 | 22.4 | 23.8 | 26.6 |
| 16 AWG | 1.310 | 12.0 | 13.8 | 14.2 | 15.0 | 16.8 |
| 18 AWG | 0.823 | 7.5 | 8.6 | 8.8 | 9.4 | 10.5 |
| 20 AWG | 0.518 | 4.7 | 5.4 | 5.5 | 5.9 | 6.6 |
| 22 AWG | 0.326 | 3.0 | 3.4 | 3.5 | 3.8 | 4.2 |
| 24 AWG | 0.205 | 1.9 | 2.2 | 2.2 | 2.4 | 2.7 |
Values show approximate wire weight per meter including insulation. Actual weights may vary by manufacturer.
Estimated the weight?
Move the weight decision into the harness workflow so BOMs, cutlists, packaging notes, and handoff documents stay in sync.
Estimated the weight? Move into the harness workflowNext Steps
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Related Terms
Why Harness Weight Matters
Wire harness weight is a critical consideration in weight-sensitive applications. Understanding and optimizing harness weight can lead to significant performance improvements.
Aerospace Applications
A typical commercial aircraft contains 100-200 miles of wiring weighing several thousand pounds. Even small reductions in wire weight per foot multiply across the entire aircraft. Lighter harnesses mean better fuel efficiency, increased payload capacity, and improved performance. This is why aerospace applications favor MIL-SPEC and Tefzel wire with their thin-wall insulation.
Motorsport Applications
In racing, every gram counts. A typical race car harness weighs 15-40 kg depending on complexity. Weight reduction improves lap times through better acceleration, braking, and cornering. Professional teams carefully optimize wire gauge selection, often using the minimum gauge that meets current requirements while maintaining safety margins.
Automotive (EV) Applications
Electric vehicles are particularly sensitive to harness weight. A 1 kg reduction in vehicle weight can translate to approximately 0.4 km additional range. Modern EVs use sophisticated harness optimization including aluminum conductors for low-current circuits and careful routing to minimize total wire length.
Weight Optimization Strategies
- Right-size wire gauges: Use the smallest gauge that safely handles the current and meets voltage drop requirements.
- Choose lightweight insulation: MIL-SPEC (M22759) and Tefzel weigh 15-25% less than standard PVC.
- Optimize routing: Shorter runs mean less weight. Plan harness paths carefully.
- Use lightweight connectors: Consider composite-shell connectors vs metal where appropriate.
- Consider aluminum: For low-current signal wires, aluminum saves ~50% weight vs copper.
- Multiplex signals: Reduce wire count by using data buses (CAN, LIN) for multiple signals.