Cable Size Calculator is a smart and reliable utility built for electricians, engineers, technicians, and DIY users who need quick and accurate cable sizing for electrical installations. From small residential wiring to complex industrial setups, this app helps you choose the correct wire size to ensure safety, efficiency, and compliance with electrical standards.
Whether you’re designing a new circuit, upgrading existing wiring, or diagnosing voltage issues, the app removes guesswork and delivers precise results in seconds.
Key Features:
Voltage Drop Calculation
Easily calculate voltage drop based on cable length and load to ensure optimal performance and prevent power loss or equipment damage.
Ampacity & Current Rating
Find the safe current-carrying capacity of different cable sizes and wire gauges according to widely used electrical standards such as NEC and IEC.
Smart Wire Gauge Recommendation
Enter load current, ambient temperature, and installation conditions (conduit, open air, buried, etc.), and get the recommended cable size instantly.
Simple & Practical Interface
Designed for fast calculations with clear inputs and results—perfect for fieldwork and on-site decision-making.
The Cable Size Calculator is an essential companion for anyone working with electrical systems. It helps you work safely, follow standards, reduce errors, and complete projects with confidence. Save time, improve accuracy, and get your electrical calculations right—every time.
