Free Online Linear Interpolation Calculator, Enter value of x₁, y₁, x₂, y₂ and x₃, then hit "Calculate" button and get result of Interpolated y₃, Slope (m) and Y-Intercept (b).

Calculation results

Linear Interpolation Calculator

Slope (𝑚) using the formula:

m= y₂ - y₁ / x₂ - x₁

Y-intercept (𝑏) using the formula:

b= y₁ - m * x₁

Linear Interpolation Formula and Interpolated y₃ formula: