Free Conduit Fill Calculator
Enter your wiring and pick a conduit to instantly check NEC Chapter 9 fill percentages (40% / 60%).
Wires in conduit
Add a conductor
Size
14 AWG
12 AWG
10 AWG
8 AWG
6 AWG
4 AWG
2 AWG
1 AWG
1/0 AWG
2/0 AWG
3/0 AWG
4/0 AWG
Insulation
THHN / THWN
THW
XHHW
TFFN
Bare
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Conduit type & size
Conduit type
EMT
PVC Schedule 40
Rigid Metal (RMC)
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Add wires and pick a conduit
Uses NEC Chapter 9 Table 4 allowable areas and Table 5 conductor areas. Max 40% fill for 3+ wires, 60% for 1 wire.
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