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Voltage Drop Calculator
Voltage Drop Calculator
Calculate voltage drop across a wire based on length, material, gauge, and current load.
Download PDF Report
Input Values
Single-Phase
Three-Phase
Wire Gauge
Custom resistance →
AWG 14 (2.525 Ω/kft)
AWG 12 (1.588 Ω/kft)
AWG 10 (0.999 Ω/kft)
AWG 8 (0.628 Ω/kft)
AWG 6 (0.395 Ω/kft)
AWG 4 (0.249 Ω/kft)
AWG 2 (0.156 Ω/kft)
AWG 1 (0.124 Ω/kft)
AWG 1/0 (0.098 Ω/kft)
Resistance
Ω/kft
Wire Length
ft
Current
A
Source Voltage
(opt.)
V
Calculate
Wire Safety
SRC
Wire
LOAD
0%
—
3%+ limit
Enter values to check NEC safety
Visualization
Rectangle Graph
Calculation Result
Amortization Schedule
← Prev
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Month
Interest
Principal
Balance
User Feedback & Ratings
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