Electric Resistance Converter
Convert between common resistance units. Press
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Value
Compute from V / I (R = V / I)
Compute from resistivity (R = ρ·L / A)
From unit
To unit
Precision (decimal places)
Voltage (V)
V
Current (I)
A
mA
R = V / I (units converted automatically).
Material (ρ)
Copper (1.68e-8 Ω·m)
Aluminum (2.82e-8 Ω·m)
Nichrome (~1.10e-6 Ω·m)
Silver (1.59e-8 Ω·m)
Gold (2.44e-8 Ω·m)
Custom (enter below)
Cross‑section
Use area
Use diameter
m²
cm²
mm²
m
cm
mm
Length (L)
m
cm
mm
R = ρ × L / A
1 Ω
1 kΩ
1 mΩ
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