Poisson's Ratio Calculator
Calculate Poisson's ratio (ν), which measures a material's tendency to deform in directions perpendicular to the applied force.
Formula: ν = - (Transverse Strain) / (Axial Strain)
ν = - (ΔD / D₀) / (ΔL / L₀)
Important: Ensure all length and diameter/width units are consistent (e.g., all mm or all inches). For tensile (stretching) tests, ΔL is positive, and the change in diameter/width ΔD is typically negative (contraction).
Calculated Poisson's Ratio:
ν = 0(dimensionless)Most common materials have 0.0 ≤ ν ≤ 0.5