Integration Calculator (numeric + steps)

Run composite trapezoid, Simpson, adaptive Simpson, Romberg, Gauss-Legendre, or Monte Carlo integration and inspect every stage in the How it's calculated log. The tool also covers basic indefinite forms, area/average/arc length/surface applications, and probability CDFs.

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Unit
Mode

Result

How it's calculated

    Teacher notes

    FAQ

    Which integration methods are available?

    Composite trapezoid, Simpson, adaptive Simpson, Romberg, Gauss-Legendre (2/3/5 nodes), and Monte Carlo are implemented. Each run records nodes, weights, and error estimates in the How it's calculated log.

    How do you handle infinite limits or oscillatory integrals?

    The integrator expands the interval exponentially while monitoring convergence, and raises an alert when divergence is suspected. Trigonometric functions automatically respect the degree/radian setting.

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