Polynomial Calculator

Evaluate a polynomial (up to degree 4) at a chosen value of x.

Calculate

Enter your values below.

e.g. 1,-2,0,5 means x³ - 2x² + 5

Result

Polynomial value
0

Formula used

Evaluated using Horner's method: coefficients are combined from highest to lowest degree, multiplying the running total by x at each step.

Example: x³ − 2x² + 5 at x = 3 → 3³ − 2(3²) + 5 = 14.

How to use this calculator

  1. Enter Coefficients, highest degree first (comma-separated), Value of x.
  2. Press Calculate to see your result instantly.

FAQ

Frequently asked questions

How do I enter the coefficients?

List them from the highest power down to the constant term, separated by commas, including zeros for missing powers.

What method is used to evaluate the polynomial?

Horner's method, an efficient way to evaluate polynomials with fewer multiplications.

Can coefficients be negative or decimal?

Yes, any real numbers are supported.

What is the maximum degree supported?

There's no hard limit — enter as many coefficients as your polynomial needs.