∑ Math and geometry

Integral calculator

Numerically evaluate a definite integral between two finite bounds.

Rules reviewed: 2026-10-13BS / EN
01

Your inputs

Starting values are an example. Replace them with your own.

Your inputs stay in your browser.

02

Your result

Enter your details and run the calculation.

METHOD

How it is calculated

Adaptive Simpson quadrature with estimated error checks and a bounded number of evaluations.

TRACEABLE

Sources and validity

Basic arithmetic or geometry using the formula shown. Uses only your inputs.

How we maintain data ↗