PERT Calculator

Three-point estimation using PERT (Program Evaluation and Review Technique)

Tasks

PERT Formula: E = (O + 4M + P) / 6 | σ = (P - O) / 6 | 95% = E ± 2σ

Unit:

Add Task

Tasks (2)

Example: Backend API

O=2 M=4 P=8

4.33

±1.00

Example: Frontend UI

O=3 M=5 P=10

5.50

±1.17

Estimates2 tasks, ~9.83 days

Project Total

Expected Duration

9.83 days

Standard Deviation

±1.54 days

95% Confidence

6.76 - 12.91

6.769.83 (E)12.91

Task	O	M	P	E	σ
Example: Backend API	2	4	8	4.33	1.00
Example: Frontend UI	3	5	10	5.50	1.17

↵Add Task

ClickCopy