Online calculator for linear interpolation and extrapolation. Given two (x, y) pairs and an additional x or y, compute the missing value.

An online linear interpolation calculator helps to find interpolated values for data points on a line or curve. The calculator plots the interpolated point and provides a step-by-step solution using …

Quickly find values between known data points using our linear interpolation calculator. Input your data, get precise estimates in seconds.

Our free online Interpolation Calculator allows you to quickly and accurately estimate unknown values in your dataset, whether you’re working with simple linear or complex polynomial …

Free online interpolation calculator for linear and polynomial interpolation. Calculate missing data points with our fast, accurate mathematical tool.

Sep 12, 2025 · Performing a linear interpolation is as simple as using the equation above. First, find the known coordinate points, then plug the values into the calculator or formula.

This essential math and data analysis tool applies the linear interpolation formula to find a precise value on a straight line connecting two coordinates. Perfect for engineers, scientists, financial …

Professional-grade interpolation calculator with linear, polynomial, and cubic spline methods. Interactive visualization, step-by-step solutions, and CSV export for engineers and scientists.

Use our interpolation calculator to perform quick and accurate calculations. Free online calculator tool for interpolation calculations.

This linear interpolation calculator is a handy tool for finding points on a certain line — determined either by two coordinates or directly by the slope-intercept form.