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THE FEUTEX TOOLKIT

Bilinear Grid Cell Interpolation

Interpolate a rectangular data cell from four corner values.

Math workspace● Runs in your browser
01 Your input
02 Your result
View or copy raw result data
FormulaValue = (1-u)*(1-w)*q00+u*(1-w)*q10+(1-u)*w*q01+u*w*q11
Sources and model references

Made for real tasks

  • Interpolate a rectangular data cell from four corner values.
Explore step-by-step workflows →

Worked example

Inputs

Lower-left value
0 number
Lower-right value
10 number
Upper-left value
20 number
Upper-right value
30 number
Horizontal fraction
0.25 fraction
Vertical fraction
0.5 fraction

Expected results

Value
12.5 number

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

  1. Enter lower-left value, lower-right value, upper-left value, upper-right value, horizontal fraction, vertical fraction.
  2. Use the displayed units and confirm the model assumptions.
  3. Calculate and compare the outputs against your input scenario.

Try this example

{
  "q00": 0,
  "q10": 10,
  "q01": 20,
  "q11": 30,
  "u": 0.25,
  "w": 0.5
}

Accuracy and scope

Normalized fractions refer to one rectangular cell. Does not reproduce nonlinear curvature within the cell.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.