This app assists electrical tradespeople with conduit fill and sizing calculations for various wire gauges. It supports US, Canadian, and UK electrical codes, offering a 7-day free trial before a monthly or yearly subscription.
5.2
January 16, 2026
Updated to the latest 2026 NEC. Bug fixes.
Monthly subscription
$19.99
Lifetime
All 3rd party advertisements are removed.
Conduit Filler supports calculations in accordance with the 2026 USA National Electrical Code, the 2024 Canadian Electrical Code, and the British Standard BS 7671.
Conduit Filler offers a 7-day free trial. After the trial, subscriptions are available monthly for $2.49 or yearly for $22.49.
Yes, you can manage your subscription and turn off auto-renewal by opening your device's Settings app, tapping your name, and then tapping Subscription. The current subscription cannot be cancelled during the active period.
No, Conduit Filler does not present any third-party advertisements.
Conduit Filler is available on iPhone and iPad devices.
The latest version, 5.2, was released on January 16, 2026. Updates typically occur to align with new code standards and improve functionality.
Conduit Filler has an age rating of 4+, making it suitable for a wide range of users.
Yes, your subscription can be enabled on more devices using the same Apple ID.
