By Bret Hardman
Report updated Apr 16, 2026
Derated: Conduit Fill
For professional electricians and electrical contractors requiring NEC-compliant conduit and wire calculations.
Overview · Full Intel report in progress
Derated: Conduit Fill is an established productivity app that is completely free. With a 4.3/5 rating from 16.3K reviews, it shows polarized user reception.
What is Derated: Conduit Fill?
Current Momentum
v1.0
Adds a configurable runtime schedule
Competition
Rivals identification in progress
7-Day Rank Pulse 🇺🇸
ProductivityRating Pulse 🇺🇸
What makes this app unique?
What Does It Look Like?
How Is The App's Momentum Right Now?
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What Are The Key Features?
Calculates conduit fill capacity instantly without loading screens.
Simultaneously derates wire ampacity while performing conduit fill calculations.
Uses official NEC Chapter 9, Table 4 and Table 5 data for raceway, tubing, and insulated conductor dimensions.
Allows users to export and share calculation results with colleagues or clients for improved communication.
How much does it cost?
Who Built It?
Bret Hardman
Providing professional-grade calculation tools for electricians and tradespeople to ensure on-site accuracy and NEC compliance.
Portfolio
9
Apps
Who is Bret Hardman?
Bret Hardman has established a specialized niche in high-precision utility tools for the electrical trade, moving beyond general-purpose calculators into domain-specific software. The portfolio's primary advantage lies in proprietary calculation methods, such as the 'Centerline Radius Algorithm,' which offers higher accuracy than standard industry multipliers. The publisher is currently in an active maintenance cycle, refreshing its core conduit-bending and fill-calculation suite to remain compliant with evolving National Electric Code (NEC) standards.
Who is Bret Hardman for?
- Professional electricians
- Electrical contractors
- Apprentices requiring field-ready tools for NEC-compliant calculations
Portfolio momentum
The publisher is actively developing its suite, with 5 updates across the portfolio in the last 6 months and a major release occurring within the last 10 days.
What other apps does Bret Hardman make?
Workman's Calculator Pro
RIGID: Conduit Bending Calculator
QuickBend: Conduit Bending
mathCards ÷ x + -
SoundBored* Build Your Own Soundboard
MTRList
Analysis in progress, available soon
What do users think recently?
Analysis in progress, available soon
Analysis in progress, available soon
What is the competitive landscape for Derated: Conduit Fill?
How's The Productivity Market?
How does it evolve in the Productivity market?
| Country | Category | Chart | Rank | Change |
|---|---|---|---|---|
| 🇺🇸 US | Productivity | iOSPaid | #89 | ▼15 |
Strategic analysis coming soon
SWOT, key takeaways & outlook
The outtake for Derated: Conduit Fill
Key Takeaways
Derated provides a fast, NEC-compliant digital workflow for electricians to perform complex conduit and wire calculations on the go.
Where Is It Heading?
Trend analysis
Available very soon