Markov Chain Steady State Probability Calculator

Study transition matrices with confidence. Estimate long run probabilities, compare states, and track convergence. Build better statistical insight easily.

Calculator Input

Each row of the transition matrix must total 1. Initial probabilities are normalized automatically if needed.

Plotly Convergence Graph

Example Data Table

From / To Sunny Cloudy Rainy
Sunny 0.70 0.20 0.10
Cloudy 0.30 0.40 0.30
Rainy 0.20 0.30 0.50

This sample matrix models daily weather movement. Long run probabilities show the stable share of time in each weather state.

Formula Used

Steady state condition: πP = π

Total probability condition: π₁ + π₂ + π₃ = 1

Here, P is the transition matrix and π is the steady state vector. The calculator solves the linear system formed by these equations. It also multiplies the initial distribution by P repeatedly to show how probabilities move toward the long run pattern.

How to Use This Calculator

  1. Enter three state names.
  2. Fill the 3×3 transition matrix.
  3. Make sure each row sums to 1.
  4. Enter the initial probability distribution.
  5. Choose the number of simulation steps.
  6. Press Calculate to see the steady state and convergence table.
  7. Use CSV or PDF buttons to export the results.

About Markov Chain Steady State Probability

What the calculator does

A Markov chain describes movement between states. Each move depends only on the current state. It does not depend on the full past. This calculator finds the long run probability of being in each state. That long run vector is called the steady state distribution.

Why steady state matters

Steady state probabilities help you understand stable behavior. They show what happens after many transitions. This is useful in statistics, finance, operations, weather modeling, and customer behavior analysis. A short term distribution may change fast. The long run pattern is often more informative.

How the result is found

The calculator uses the transition matrix you enter. Each row must sum to one. The program solves the equation πP = π. It also uses the rule that all steady state probabilities add to one. That gives a solvable linear system for three states.

How convergence is shown

You can enter an initial distribution and a step count. The calculator multiplies that vector by the transition matrix again and again. This creates a path of probability distributions. The table and graph show whether the system moves toward a stable pattern. Many regular chains do converge this way.

How to interpret the output

If a steady state value is 0.55, that means the process spends about 55 percent of the long run time in that state. It does not mean 55 percent on every single step. It describes long run average behavior. That is why steady state analysis is powerful.

Important input checks

Always verify that every transition probability is valid. No entry should be negative. No entry should exceed one. Each row total must equal one. If your matrix fails these rules, the model is not a proper transition matrix. The calculator warns you when that happens.

Where this model is used

Markov chains appear in queue analysis, reliability studies, web navigation, machine learning, and survival modeling. They are also useful for brand switching and credit rating transitions. A steady state calculator saves time and reduces manual algebra. It also makes patterns easier to explain with clear visuals.

Frequently Asked Questions

1. What is a steady state probability?

It is the long run probability of being in each state of a Markov chain. It shows the stable pattern after many transitions.

2. Why must each row sum to one?

Each row lists all possible next state probabilities from one current state. Since one of those outcomes must happen, the row total must equal one.

3. Does every Markov chain have a steady state?

Not always in a useful form. Some chains do not converge to one stable distribution. Regular and irreducible chains are more likely to have a practical steady state.

4. What does the initial distribution do?

It sets the starting probabilities before transitions begin. It affects early steps, but in many chains the long run result becomes independent of that start.

5. Why do I see both steady state and step results?

The steady state is the target long run vector. The step results show the path toward that target based on your chosen starting distribution.

6. Can I use this for business data?

Yes. It works well for customer switching, credit ratings, machine states, website movement, and other systems with probabilities between states.

7. What happens if my matrix is invalid?

The calculator shows an error. You should fix row totals and ensure every transition value stays between zero and one.

8. Why is the graph useful?

The graph makes convergence easier to see. It helps you compare how each state probability changes over time and where it stabilizes.