Aircraft Wire Gauge Calculator
Calculate minimum recommended AWG wire size for aircraft electrical circuits based on current, voltage, wire length, and allowable voltage drop.
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Enter circuit parameters to calculate recommended wire gauge.
AWG Ampacity Reference
| AWG | Single (A) | Bundled (A) | Ω/1000ft |
|---|---|---|---|
| 4 | 95 | 70 | 0.253 |
| 6 | 75 | 55 | 0.403 |
| 8 | 55 | 40 | 0.641 |
| 10 | 40 | 30 | 1.018 |
| 12 | 30 | 20 | 1.619 |
| 14 | 20 | 15 | 2.575 |
| 16 | 13 | 10 | 4.094 |
| 18 | 10 | 7 | 6.51 |
| 20 | 7.5 | 5 | 10.35 |
| 22 | 5 | 3 | 16.46 |
| 24 | 3 | 2 | 26.17 |
| 26 | 2 | 1.5 | 41.62 |
| 28 | 1 | 0.7 | 66.17 |
Ampacity values based on MIL-W-22759/16 in accordance with FAA AC 43.13-1B. Bundled values assume 9+ wire bundle with no airflow. Always verify against applicable aircraft wiring diagrams and maintenance manual.
Important Disclaimer
This tool is provided for educational and reference purposes only. Always verify all calculations against FAA-approved maintenance manuals, aircraft documentation, and applicable regulations. Never use web-based tools as the sole basis for airworthiness decisions.