WireSizerPro is an independent engineering utility engineered to provide instantaneous, reliable conductor sizing and voltage drop evaluations for electrical contractors, engineers, and apprentices working under National Electrical Code (NEC) standards.
Modern electrical applications require precise conductor selection that accounts for both thermal ampacity and terminal voltage drop. Many online tools are burdened with bloated third-party scripts, aggressive advertising, or outdated tables.
WireSizerPro was built with a zero-dependency architecture to deliver millisecond-level calculation speeds on mobile devices directly at the jobsite.
All core calculations within WireSizerPro are strictly aligned with established benchmarks published in the National Electrical Code:
We continuously review our calculation formulas against emerging NFPA code cycles. For technical questions, data verification, or general feedback, contact us at: contact@wiresizerpro.com.