Bilinear Interpolation Equation Calculator

Engineering - Double Interpolator Formula


To interpolate the P value:
x1, x2, x3, y1, y2, Q11, Q12, Q21 and Q22 need to be entered/copied from the table.
x and y defines point to perform the interpolation.
P is the interpolated value and solution
x1xx2
y1Q11Q21
yP
y2Q12Q22

Solving for P

linear interpolation

Inputs:

x1
x
x2
y1
y
y2
Q11
Q21
Q12
Q22


Solution:

P
= NOT CALCULATED

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