Mathtools Probability Tree Generator

Input

2 steps active

Enter probabilities such as 1/3, 50%, 0,5 eller 0.5. If you write 25, it is interpreted as 25%.

Starting point

Also use a 3rd step

Show probability on branches

Last 6 colors

First click a color picker next to an outcome, then click one of the colors here.

Name of 1st step

Outcome

Probability

Color

Not calculated yet.

Name of 2nd step

Outcome

Probability

Color

Not calculated yet.

0 final outcomes

Select rows in the table to add probabilities together.

Select	Combined outcome	Calculation	Fraction	Percent
Click Calculate to see the combined outcomes.

Enter your data and click Calculate.

Remember: Along one path, you multiply the probabilities. That is why the total probability is shown at the end of each path.