How it works
Resistance R = resistivity × length / cross-section area, converting mm² to m².
Input definitions
- Resistivity (Ω·m)
- Enter the value in the labeled unit.
- Wire length (m)
- Enter the value in the labeled unit.
- Cross-section area (mm²)
- Enter the value in the labeled unit.
A worked example
- Resistivity (Ω·m)
- 1.68e-8
- Wire length (m)
- 10
- Cross-section area (mm²)
- 1
Assumptions & limits
Ideal educational model in the stated SI units. Real equipment, structural design and safety decisions need appropriate professional analysis; losses are excluded unless entered.
Sources & review
Maintained by AnsRio. Methods and examples use automated checks; this does not imply independent professional certification.
Method updated 2026-10-18. Content checked against the stated method and examples. Our verification approach.
Common questions
Does this include connections or temperature change?
No. Enter resistivity appropriate to the material and temperature. Contact resistance and heating are separate effects.
How does Uniform wire resistance work?
Resistance R = resistivity × length / cross-section area, converting mm² to m².
What should I check before using Uniform wire resistance?
Ideal educational model in the stated SI units. Real equipment, structural design and safety decisions need appropriate professional analysis; losses are excluded unless entered.