Calculator Stations
Math Calculators

Expected Value Calculator

Calculate expected value with clear inputs, formulas, and supporting results.

Free browser-based tool • No signup required
Expected Value

Expected Value Calculator

Primary result—
Supporting result—
Results are estimates for informational purposes. Verify critical calculations and project requirements independently.

Calculator Inputs and Outputs

Inputs

  • Outcome value — example: 100
  • Probability (%) — example: 35
  • Cost per trial — example: 10

Results

  • Primary result
  • Supporting result

Formula used

Expected Value formula.

How to Use the Expected Value Calculator

Enter the requested values, confirm the units and assumptions, then select Calculate Expected Value. The default inputs provide a complete working example.

Formula

Expected Value formula.

Understanding the Results

The primary answer appears first. Supporting outputs show related values so you can review the calculation and its assumptions.

Accuracy Tips

  • Use measured or verified input values.
  • Keep units consistent with the labels shown.
  • Recalculate whenever an input or planning assumption changes.

Important Note

This calculator is an informational planning tool. Confirm critical financial, medical, construction, scientific, tax, legal, or safety decisions with an appropriately qualified professional.

Calculation Standards

This tool uses documented formulas and high-precision internal values. Displayed results may be rounded for readability. Review the assumptions and verify important decisions with a qualified professional.

Read our calculation methodology