The app will calculate the conduit fill percentages and jam probability for multiple conductors per NEC® Guidelines. Simply enter the conduit type and size, then specify your conductors.

Welcome to the Conduit Fill Calculator website. We hope to provide you with the best online conduit fill calculator, as well as all relevant information regarding conduits, conduit fill, conduit accessories, and …

Calculate conduit fill percentage for multiple wire sizes, Cat6, Romex, and THHN. Instantly check NEC compliance, jam ratio, and capacity for EMT, PVC, and Rigid.

Our online tool helps electricians, engineers and contractors calculate the right size conduit, fill percentages and jam probability per NEC guidelines.

Calculate conduit fill percentages and find the right conduit sizing per NEC Chapter 9 requirements. Works with EMT, PVC, and RMC conduits with accurate wire area calculations for safe installations.

Calculate EMT, PVC, and RMC conduit fill percentages instantly according to NEC standards. Free, accurate, and trusted by over 50,000 electricians, contractors, and engineers worldwide.

Calculate conduit fill capacity based on wire size, type, and conduit dimensions. NEC-compliant. Free, fast, and perfect for electricians & engineers.

Professional NEC Chapter 9 conduit fill calculator implementing Table 1 fill percentages, Table 4 conduit areas, and Table 5 conductor dimensions. Essential for code-compliant raceway sizing and wire …

Conduit fill calculator for Electricians and Low Voltage with EMT, PVC, RMC, Hilti sleeves, and STI EZ Path. Includes preset cable types and custom fill %.

Jan 1, 2026 · FREE Conduit Fill Calculator 2026 for NEC compliance. Calculate wire capacity for EMT, PVC & RMC conduits instantly. Ensure electrical code safety standards.