Conduit Fill Calculator
Estimate conduit fill compliance and maximum conductor counts using NEC fill percentages.
1" EMT with 12 AWG THHN =
25 conductors max @ 40% fill
Representative value from the Conduit Fill Calculator reference table.
Predefined Value Pages
This conversion has 16 predefined value pages for programmatic SEO coverage.
Conduit Fill Calculator
Select conduit size, wire gauge, and wire count to evaluate fill percentage and code-limit compliance.
Conduit Fill Result
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Reference Table
Use this complete table for quick lookup and internal linking to specific value pages.
| Conduit | Wire | 40% Fill Area (in²) | Max Wires @ 40% |
|---|---|---|---|
| 1/2" EMT | 12 AWG THHN | 0.1216 | 9 |
| 1/2" EMT | 10 AWG THHN | 0.1216 | 5 |
| 1/2" EMT | 8 AWG THHN | 0.1216 | 3 |
| 1/2" EMT | 6 AWG THHN | 0.1216 | 2 |
| 3/4" EMT | 12 AWG THHN | 0.2132 | 16 |
| 3/4" EMT | 10 AWG THHN | 0.2132 | 10 |
| 3/4" EMT | 8 AWG THHN | 0.2132 | 5 |
| 3/4" EMT | 6 AWG THHN | 0.2132 | 4 |
| 1" EMT | 12 AWG THHN | 0.3456 | 25 |
| 1" EMT | 10 AWG THHN | 0.3456 | 16 |
| 1" EMT | 8 AWG THHN | 0.3456 | 9 |
| 1" EMT | 6 AWG THHN | 0.3456 | 6 |
| 1-1/4" EMT | 12 AWG THHN | 0.5984 | 44 |
| 1-1/4" EMT | 10 AWG THHN | 0.5984 | 28 |
| 1-1/4" EMT | 8 AWG THHN | 0.5984 | 16 |
| 1-1/4" EMT | 6 AWG THHN | 0.5984 | 11 |
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