Normal distribution calculator

Enter mean (average), standard deviation and cutoff points and this normal distribution calculator will calculate the area (=probability) under normal distribution curve.

Enter parameters of normal distribution:

Mean

Standard deviation

Above

Below

Between

and

Outside

and

Result:

Area (probability) = 0

Normal distribution or Gaussian distribution (according to Carl Friedrich Gauss) is one of the most important probability distributions of a continuous random variable. Normal distribution are important in statistics and are often used in the natural and social sciences to represent real-valued random variables whose distributions are not known. The normal distribution is sometimes informally called the bell curve.

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