Calculus calculators that show their working, and draw it.
Derivatives, integrals and limits with every rule named, and a graph that shows what the answer means: tangent lines you can drag, areas that shade, Riemann rectangles that animate.
Pick a tool
Differentiate
- Derivative calculatorEvery rule shown, with the tangent line drawn.
- Second derivativef″ and higher orders, plus concavity.
- Partial derivatives∂f/∂x, ∂f/∂y and the gradient.
- Implicit differentiationdy/dx for curves like x² + y² = 25.
- Chain ruleSplit f(g(x)) into outer and inner.
- Tangent lineSlope, tangent and normal equations.
- Linear approximationEstimate f(x) with a tangent line.
- Critical pointsMaxima, minima and where f′ = 0.
- Inflection pointsWhere concavity flips.
- Mean value theoremFind c where the tangent matches the secant.
Integrate
Limits & series
Understand it, don’t just copy it
Most calculators hand you an answer. CalcViz shows the rule behind every line, then draws the idea: the derivative as the slope of a ruler laid on the curve, the integral as area piling up, a limit as numbers closing in from both sides.
When a line still doesn’t click, ask the built-in tutor about that exact step.
How to type maths
Write functions the way you would on a graphing calculator. Implicit multiplication works, so 2x sin(x) means .
x^3sqrt(x)e^(2x)ln(x)sin^2(x)arctan(x)|x|pi
Questions students ask
Is CalcViz free?
Yes. Every calculator is free with no account. All the maths runs in your browser, so it is fast and works on a phone.
Does it show the steps?
Yes. The derivative, integral and limit calculators name every rule they apply (power rule, product rule, u-substitution, integration by parts, L’Hôpital’s rule and so on), in the order you would write them on paper.
How accurate is it?
Derivatives are computed symbolically. Every antiderivative is checked by differentiating it back before it is shown. Definite integrals and limits are cross-checked numerically, and the table of values lets you verify limits yourself.
What is the AI tutor?
An optional helper under each solution. It reads the problem and the worked steps and explains them in plain language, or gives you a similar practice problem. It only runs when you ask it something.