Conduit fill calculator
Conduit type
Trade size
Wire 1 (THHN)
Wire 2 (THHN)
Wire 3 (THHN)
Wire 4 (THHN)
Result
12.5% full
Fits within the 40% limit for three or more wires.
- Wires
- 5
- Wire area
- 0.0665 in²
- Inside 3/4 in. EMT
- 0.533 in²
- Smallest that fits
- 1/2 in. EMT
How it is calculated
- 4 × 12 AWG THHN
- 1 × 12 AWG THHN
- Fill = 0.0665 ÷ 0.533 = 12.5%