`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.