Best Conduit Filler Apps

40+ iOS apps curated and reviewed

4.1 avg rating
15 free apps
Updated May 2026

If you already know Conduit Filler, this is the deeper bench. 40+ conduit filler apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of May 2026.

Top Picks for Conduit Filler

Conduit Filler#1

Conduit Filler by Zsolt Giczi

The electrician's helper
Editor's Choice
💼 Business
3.5(16 ratings)
FreeIn-App Purchases
Conduit Filler screenshot 1
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Conduit Filler screenshot 3
Conduit Filler screenshot 4
Conduit Filler screenshot 5
Conduit Filler screenshot 6

This application helps electrical tradespeople with conduit fill calculations and conduit sizing for various wire gauges, providing calculations in accordance with relevant national and international electrical codes. Try it out with a 7-day free trial and subscribe monthly or yearly for unrestricted access to its features.

Southwire® Conduit Fill Calc#2

Southwire® Conduit Fill Calc by Southwire Company

Strong Contender
🔧 Utilities
4.5😊(679 ratings)
Free
Southwire® Conduit Fill Calc screenshot 1
Southwire® Conduit Fill Calc screenshot 2
Southwire® Conduit Fill Calc screenshot 3

This application helps electricians, engineers, and contractors quickly determine the proper conduit size to use based on NEC guidelines, including fill percentages and jam probability. Simply input conduit type, size, and conductors, and the app will calculate the conduit fill percentage for you.

What We Love

  • 🚀 Quick and easy calculations
  • 👍 User-friendly interface with spin wheel controls
  • 📊 Shows actual fill percentage and NEC compliance
  • 🔧 Ability to add multiple wire sizes simultaneously

Room to Improve

  • ⚠️ Accuracy issues reported by multiple users
  • ❌ Limited wire gauge options (missing 16 & 18 AWG)
  • 🔄 Changing conduit type erases conduit size
Prysmian Group Conduit Fill#3

Prysmian Group Conduit Fill by Prysmian Group

Electrical Conduit Fill
Worth Considering
📊 Productivity
3.0(2 ratings)
Free
Prysmian Group Conduit Fill screenshot 1
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Prysmian Group Conduit Fill screenshot 5

This electrical conduit fill calculator helps engineers, contractors, and electrical professionals quickly determine the minimum conduit size according to the National Electrical Code, saving time on complex calculations. Try it out to easily find answers for your conduit fill needs.

More Conduit Filler apps to explore

4
Conduit Mate: Pipe Bender
Conduit Mate: Pipe Bender
Conduit Mate: Pipe Bender
Offset, Saddle, 3D Visualizer
Free
🔧 Utilities
(0)
5
Conduit Bender Elite - Calc
Conduit Bender Elite - Calc
Conduit Bender Elite - Calc
Calculator for Electricians
$7.99

An essential calculator designed for Electricians, the Conduit Bender Elite™ simplifies conduit bending by providing step-by-step guidance and support for various bends. It offers a wide range of bend types and optional digital level functionality to streamline installations, with customizable preference settings for different conduit sizes. Email techsupport@cyberprodigy.com for assistance or suggestions for future enhancements.

🔧 Utilities
(1.6K)
6
Conduit Fill Capacity Calculator
Conduit Fill Capacity Calculator
Conduit Fill Capacity Calculator
by TE Connectivity Corporation
Free

This application helps you determine the maximum number of data cables that can fit in a conduit of a specific size, based on a chosen fill ratio. Try it out to easily calculate conduit fill capacity and plan your cable management efficiently.

🔧 Utilities
(1)
7
NEC Box & Conduit Calc
NEC Box & Conduit Calc
NEC Box & Conduit Calc
NEC Box & Conduit Fill
Free
🔧 Utilities
(16)
8
Conduit Fill
Conduit Fill
Conduit Fill
quickly calculate conduit fill
$4.99
🔧 Utilities
(2)
9
Derated: Conduit Fill
Derated: Conduit Fill
Derated: Conduit Fill
Fill and Derating Calculator
$1.99

This conduit fill calculator app simplifies complex electrical calculations, allowing users to effortlessly calculate conduit fill and derate wires' ampacity in real-time, adhering to National Electric Code guidelines. With an intuitive interface, users can easily set up calculations, share results, and collaborate with others, streamlining communication and ensuring accurate results.

📊 Productivity
(5)
10
Conduit Bending - Bend Calc
Conduit Bending - Bend Calc
Conduit Bending - Bend Calc
Electricians Bender Calculator
Free
$4.99 | 100% OFF

Get accurate and efficient conduit bending results with precise calculations and easy-to-use features. Download this app to save time, reduce waste, and eliminate costly mistakes on the jobsite or in the shop.

📊 Productivity
(2)
11
RIGID: Conduit Bending Calculator
RIGID: Conduit Bending Calculator
RIGID: Conduit Bending Calculator
by Bret Hardman
$2.99

This advanced bending calculator helps electricians working with conduit of various types and sizes to quickly obtain essential information and make accurate calculations for multiple bends. It offers features such as bender selection, conduit marking, and a multiplier card, making it a valuable tool for professionals in the field, try it today!

📊 Productivity
(14)
12
FILL ◦ Conduit Fill Calculator
FILL ◦ Conduit Fill Calculator
FILL ◦ Conduit Fill Calculator
NEC 2023 Conduit Fill by Code
Free
🔧 Utilities
(1)
13
BendCalc: Conduit Bending
BendCalc: Conduit Bending
BendCalc: Conduit Bending
Offset, saddle & fill calc
Free
🔧 Utilities
(1)
14
Pipe N Wire
Pipe N Wire
Pipe N Wire
Conduit Fill
$0.99

This application is a fast and reliable conduit fill calculator that helps electricians determine the right conduit size based on selected wires, pipe material, and desired fill percentage, all while being NEC-compliant. With its intuitive interface and robust features, it streamlines workflow and takes the guesswork out of conduit sizing, making it an essential tool for electricians to work with confidence.

📊 Productivity
(9)
15
Conduit Fill Pro
Conduit Fill Pro
Conduit Fill Pro
Capacity Calculator & Code
Free
🔧 Utilities
(0)
16
Cerrowire Calculators
Cerrowire Calculators
Cerrowire Calculators
by Cerro Wire LLC
Free

This application provides calculators to help determine the correct conduit size for copper and aluminum building wire based on the National Electrical Code. It allows users to calculate the maximum number of conductors that fit in a raceway or the required raceway size for specific conductors, making it easy to size conduit quickly and accurately.

🔧 Utilities
(5)
17
Easy Bend: Conduit Calculator
Easy Bend: Conduit Calculator
Easy Bend: Conduit Calculator
Offset, Saddle & 90° Bends
Free
🔧 Utilities
(2)
18
FieldVolt Electrical
FieldVolt Electrical
FieldVolt Electrical
by MATTHEW DAVID KOVALIK
Free
🔧 Utilities
(0)
19
SLD Sizer for Engineering
SLD Sizer for Engineering
SLD Sizer for Engineering
Single Line - One Line Diagram
Free

This reference tool helps electrical engineers, designers, and contractors verify wire and conduit sizes based on selected load, providing minimum requirements according to the NEC. It serves as a quick guide for designing or verifying electrical installations and drawings.

🔍 Reference
(7)
20
BendPro: Conduit Bending
BendPro: Conduit Bending
BendPro: Conduit Bending
EMT Bend Calculator
Free
🔧 Utilities
(0)