Voltage Drop Calculator.

NEC/IEEE Wire Sizing

Free · Designed for iPad

Voltage Drop Calculator (NEC/IEEE) • Enter voltage, current, length, and power factor • Supports continuous load (125%), conductor grouping, and ambient temperature correction • Choose Copper (Cu) or Aluminum (Al) conductors • Single-phase or three-phase systems • Detailed results: base & corrected ampacity, voltage drop, percent drop, compliance badges (≤ 3% branch, ≤ 5% feeder + branch) Wire Size Calculator (Volt Drop) • Suggests correct AWG/kcmil size based on allowed percent voltage drop • Flexible length input in meters or feet • Supports wire sizes in mm², inches, and AWG/kcmil • Uses NEC Ch.9 Table 9 (AC impedance) or DC fallback for accuracy • Displays suggested size with area, voltage drop, percent drop, and load voltage Extra Tools • mm² ↔ AWG Converter • Formula cards for quick reference • Export results as PDF/Report for sharing or records

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Quick update: Wire sizes now available in inches and millimeters.

The developer, V PUGAZHENTHI, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Used to Track You

    The following data may be used to track you across apps and websites owned by other companies:

    • Location
    • Identifiers
    • Usage Data
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    • Diagnostics

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  • Size
    • 38.5 MB
  • Category
    • Utilities
  • Compatibility
    Requires iOS 17.6 or later.
    • iPhone
      Requires iOS 17.6 or later.
    • iPad
      Requires iPadOS 17.6 or later.
    • Mac
      Requires macOS 14.6 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.3 or later.
  • Languages
    English and 7 more
    • English, Dutch, French, German, Italian, Portuguese, Simplified Chinese, Spanish
  • Age Rating
    4+
  • Provider
    V PUGAZHENTHI
    • V PUGAZHENTHI has identified itself as a trader for this app and confirmed that this product or service complies with European Union law.
    • Address
      No 11/2, 15th STREET JAI NAGAR,
      ARUMBAKKAM CHENNAI
      CHENNAI 600106
      Tamil Nadu
      India
    • Phone Number
      +91 9677939393
    • Email
      pugal.apple@gmail.com
  • Copyright
    • © All Rights Reserved