Gauge Factor

$GF = ( R_1 - R_0 ) / R_0 / ( L_1 - L_0 ) / L_0$

Enter a value for all fields

The Gauge Factor calculator computes the change in electrical resistance based on the strain on a conductive element.

INSTRUCTIONS: Choose units and enter the following:

(R₀) Nominal Resistance
(R₁) Resistance Due to Strain
(L₀) Original Length of Conductive Element
(L₁) Strained Length of Conductive Element

Gauge Factor (GF): The factor is returned as a real number.

The Math / Science

The Gauge Factor calculator computes the ratio of change in electrical resistance to the strain on a conductive element. The strain is the ratio of the change in length to the nominal length, $L_0$ . The change in resistance is measured as the $Delta$ R/R, where R is the nominal resistance at nominal length.

GF = ( $Delta R$ / $R_"Nominal"$ ) / $epsilon$ , where ε = ΔL / L_Nominal

Therefore, the formula for Gauge Factor is:

$GF = ((R_1 - R_0)/(R_0)) "/" ((L_1 - L_0)/(L_0))$

where:

GF = Gauge Factor
R₁ = Resistance Due to Strain
R₀ = Nominal Resistance
L₁ = Strained Length of Material
L₀ = Nominal Length or Conductive Material.