Mathlean · Online math workspace
Normal distribution calculator
Evaluate the normal density and related probability functions.
How to use this calculator
Edit PDF(NormalDistribution(mean,standard deviation),x). Use CDF instead of PDF for the left-tail probability.
Tap the math below to edit it and see the result. Once a result is ready, press Tab on a hardware keyboard to accept it. Outside a matrix, Return completes the line; the phone math keyboard has the same Return action.
Try it here
Interactive tools require JavaScript. You can read the guide and example without it.
What to know
Density is not a point probability. Standard deviation must be positive; Quantile uses probabilities strictly inside the unit interval.
Mathlean combines visual mathematical input with computation and canvas tools. Results depend on the expression and available engine support; check important answers independently.