Search Ctrl K
Home / Tools
THE FEUTEX TOOLKIT

Three-Point Project Estimate

Calculate a PERT expected duration and standard deviation from optimistic, likely and pessimistic estimates.

Work and Planning workspace● Runs in your browser
01 Your input
02 Your result
View or copy raw result data
FormulaExpected = (optimistic + 4 × likely + pessimistic)/6; SD = (pessimistic − optimistic)/6

How to use this tool

  1. Enter the measurements and assumptions in the labeled fields.
  2. Run the calculation and check the units in the output.
  3. Copy or download the result.

Try this example

{"low": 2, "likely": 5, "high": 14}

Accuracy and scope

Single-task PERT approximation; no guarantee of a completion probability or project-level distribution.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.