Conduit Fill Calculator
Add the conductors going in the raceway, pick the conduit, and see the actual fill percent vs the NEC Chapter 9 Table 1 allowable. Include the EGC if there is one.
Conduit
Conductors
Results
Total conductor count—
Total conductor area—
Conduit interior area (Table 4)—
Allowable fill (Table 1)——
Actual fill—
Status—
Tools we used or recommend for this work: a Klein conduit bender in the trade size this calc recommended, Milwaukee EMT cutters or a portable bandsaw for clean cuts, a Greenlee fish tape, and pulling lubricant for tight conduit fills (Polywater J or Ideal Yellow 77). Links may be affiliate-tagged where the brand has a program.
