Interpolation Calculator

Find the interpolated y value between two known data points using linear interpolation.

Point 1 (x₁, y₁)

x₁

y₁

Point 2 (x₂, y₂)

x₂

y₂

Find y for x =

Interpolated y

0

Slope (m)

0

Y-Intercept (b)

0

Formula Step

Line Equation

Linear Interpolation Formula

y = y₁ + (x - x₁) × (y₂ - y₁) / (x₂ - x₁)

When to Use

Estimating values between known data points
Filling gaps in tables or charts
Animation tweening and smooth transitions

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