Box Fill 2

Box Fill 2: Electrical & Construction Calculator

Stop guessing and start calculating with confidence.

Box Fill 2 is the ultimate pro-grade utility for electricians, contractors, and engineers. Designed to streamline your workflow from the office to the job site, it combines a precision electrical box fill calculator with a full-featured construction calculator in one powerful, intuitive interface.

EXPERT ELECTRICAL CALCULATIONS
Stay compliant and safe with box fill calculations based on the latest standards, including the 2024 Canadian Electrical Code (CEC) and the 2023 National Electrical Code (NEC).
Complete Fill Schedules: Create and save an unlimited list of calculations for entire projects.
Advanced Device Logic: Automatically handles standard devices and "bulky" equipment (like smart dimmers or GFCIs) using the specific depth-based volume math required by the CEC.
Detailed Conductor Tracking: Easily account for insulated conductors, bare grounds (with the NEC "4-ground" rule), internal clamps, and wire nuts.
Custom Box Support: Use standard trade sizes or enter custom dimensions for specialized enclosures.
Share & Export: Print directly from the app or share professional calculation reports via email or messaging to inspectors and team members.

FULL CONSTRUCTION CALCULATOR
No more switching between apps. Box Fill 2 includes a robust construction math engine designed for the trades.
Dimensional Math: Work directly in feet-inches-fractions or metric units with seamless conversions.
Area & Volume: Quickly solve for square footage and cubic volume for materials like concrete, drywall, and paint.
Right-Angle Solutions: Instantly calculate rafters, slopes, and square-ups for precise layouts.
History & Memory: Access previous calculations and save frequently used values to save time on repetitive tasks.

MODERN & PROFESSIONAL FEATURES
Universal Compatibility: Buy once and use on your iPhone, iPad, and Mac.
iCloud Sync: Your project data stays up-to-date across all your devices automatically.
Dark Mode Support: Optimized for high visibility in low-light job site conditions.
Clean Interface: Ad-free, professional UI designed for speed and clarity under pressure.

Put your pencil down and upgrade your toolkit. Download Box Fill 2 today.