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Logistic Sigmoid Calculator

Online logistic sigmoid calculator. Maps real log odds to a probability.

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logistic sigmoid calculator online

Use logistic sigmoid calculator online for log odds. Maps real log odds to a probability. Finite floating-point calculation with the displayed domain; large integer counts can lose exact precision.

How to use it

Enter log odds. Select Calculate and check the labeled output. Copy or download the JSON result.

Options and example settings

OptionChoices / valueExample default
log oddsMain input. Signed finite values. 2

Calculation method

probability = 1/(1+exp(-log_odds)) (^ means exponentiation; trig functions ending in d use degrees).

Worked examples

Apply logistic sigmoid calculator to the case below, keeping the displayed units and assumptions. Maps real log odds to a probability.

Logistic Sigmoid Calculator — worked case

Settings: No additional options

Input:

2

Calculated result for these inputs:

Output:

{
  "probability": 0.8807970779778823
}

Choose the right tool

Choose number theory for exact integer relationships, distribution tools for a declared random model, and geometry tools for coordinates. A density is not a probability and a statistical model does not establish a real-world outcome.

Limitations and common mistakes

  • Maps real log odds to a probability. Finite floating-point calculation with the displayed domain; large integer counts can lose exact precision.
  • Use the displayed unit in every field. Ratios and percentages are different inputs; percent fields use values such as 25 rather than 0.25.

Frequently asked questions

How can I use logistic sigmoid calculator online?

Enter log odds. Select Calculate and check the labeled output. Copy or download the JSON result.

Where is my input processed?

The bundled tool processes input in your browser. It does not upload tool input to a conversion service. Other site plugins, analytics, advertising and browser extensions may have separate behavior.

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