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ElecToolsHQ

Wire Resistance Per Length Calculator

Calculate a wire's resistance per 1000 ft from its total resistance and length (R/1000ft = (R ÷ L) × 1000).

Formula

R/1000ft = (R ÷ L) × 1000

R/1000ft
Resistance per 1000 feet, in ohms
R
Total resistance, in ohms
L
Conductor length, in feet

What this calculator does

Converts a wire's total measured resistance and length into a resistance-per-1000-ft value.

Use cases

  • Convert a measured resistance into the Ω/kft format used by the Voltage Drop calculators
  • Compare resistance per length across different conductor samples
  • Check a manufacturer's resistance-per-length spec against a field measurement

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