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 the interpolated values for the data points on a line or a curve. The calculator plots the interpolated point on a line and shows a step-by-step …

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

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 …

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

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.

Use this free Linear Interpolation Calculator to estimate missing values between two known data points. Powered by mathematically precise formulas, it delivers fast, accurate, and reliable …

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.