Cross-section
Calculate Cross-section instantly with the exact formula and a worked example. Free online calculator — no signup.
Cross-section
Current, A
Cross-section
4mm²
S
4 mm²
More about: Cross-section
What it calculates
The “Cross-section” calculator computes Cross-section in mm² from 1 parameter: current, a.
A standard physics formula used in educational and engineering tasks.
Example calculation
With parameters Current, A = 30 the result is 4 mm².
How to use
- Enter the parameter values — every field above is adjustable with a slider.
- The result and related metrics are calculated automatically as you type.
- Use the additional metrics shown (if any) where needed.
- Copy the result or bookmark the page.