RF transmission line electrical length calculator

Calculate electrical phase and electrical length with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use electrical phase and electrical length to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Physical cable length (m)
1
Velocity factor
0.66
Frequency (MHz)
100
Electrical phase (degrees)
181.944052
Electrical length (wavelengths)
0.5054

Try another scenario

Physical cable length (m)
1.1
Velocity factor
0.66
Frequency (MHz)
100
Electrical phase (degrees)
200.138457
Electrical length (wavelengths)
0.55594
Calculation method

Calculation method

Electrical phase (degrees)

360 length frequency/(c velocity factor).

Electrical length (wavelengths)

length frequency/(c velocity factor).

Symbols and units
a
Physical cable length (m)
b
Velocity factor
c
Frequency (MHz)

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Physical length, velocity factor, frequency. Returns Phase length. All coefficients and observations are user supplied; results describe only the stated mathematical model. Quantities are deterministic calculations from supplied observations and assumptions; no external data is fetched. Supported limits: Finite inputs only; numeric fields bounded as labelled. Lists and JSON records are limited to 256 entries unless a stricter tool bound is stated. No automatic design approval, legal conclusion, treatment recommendation or safety certification. Physical cable length (m): minimum 0, maximum 1000000000000.0. Velocity factor: minimum 1e-12, maximum 1. Frequency (MHz): minimum 1e-12, maximum 1000000000000.0.
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Further reading

Method reference ↗

Background reading; this does not imply endorsement or independent review of SumFizz.

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