How to use the coaxial cable inductance calculator
Find the self inductance of a coaxial cable from its length and conductor radii. Enter cable length, inner conductor radius, outer conductor radius in the fields above; the inductance is computed instantly and plotted on the chart so you can see how the answer changes.
Common searches this calculator answers include “coax inductance”, “coaxial cable inductance”, “inductance of coax”, “calculate coaxial cable inductance”, “find inductance”.
Formula
Variables
- L — Cable length (m)
- a — Inner conductor radius (mm)
- b — Outer conductor radius (mm)
Worked example
With cable length = 10 m, inner conductor radius = 0.5 mm, outer conductor radius = 2 mm, the calculator gives inductance ≈ 2.772589 µH.
Frequently asked questions
What is the coaxial cable inductance calculator used for?
Find the self inductance of a coaxial cable from its length and conductor radii. It helps with questions such as “coax inductance”, “coaxial cable inductance”, “inductance of coax”.
What is the formula for the coaxial cable inductance calculation?
Inductance (µH) = MU0 / (2 × π) × L × ln(b / a) × 1e6. Here L is cable length (m), a is inner conductor radius (mm), b is outer conductor radius (mm).
What inputs do I need for the coaxial cable inductance calculator?
You need cable length in m, inner conductor radius in mm, outer conductor radius in mm. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use the coaxial cable inductance calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the coaxial cable inductance result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.