Voltage Drop Calculator.
Wire Size, NEC & IEC Tools
| Revenue % | ||||
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| One-time purchase | 175 | $4.68 – $8.03 |
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Description
Perform accurate Voltage Drop and Wire Sizing calculations for both NEC® (National Electrical Code) and IEC standards. Built for electricians, engineers, and contractors who need reliable results on the go.
Voltage Drop Calculator
Dual standards: Switch between NEC (AWG/Imperial) and IEC (mm²/Metric)
Enter voltage, current, run length, and power factor
Supports continuous load (125%), grouping, and ambient temperature corrections
Copper or Aluminum conductors for single-phase and three-phase systems
Detailed results including ampacity, derating, voltage drop, and load voltage
Automatic compliance checks (e.g., ≤ 3% for branch circuits)
Wire Size Calculator (Reverse)
Calculates required wire size for a target voltage drop %
Suggests optimal AWG, kcmil, or mm²
Uses NEC Chapter 9, Table 9 (AC impedance) with DC fallback
Professional Tools
Wire converter (AWG/kcmil ↔ mm²)
Generate and share PDF reports
Handy electrical formula cards
Localized in English, Spanish, French, German, Italian, Dutch, Portuguese, and Chinese
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