Effort & Time Estimator

Three-point (PERT) estimates for effort, time and resources — with a confidence range.

Tasks🧾

Total estimate (PD)Σ

Std dev (PD)±

Likely range (68%)

0–0

person-days

Unit:

📐

Add a task to estimate.

For each task, give an optimistic, most-likely and pessimistic number — we compute the PERT estimate.

PERT estimate = (Optimistic + 4 × Most-likely + Pessimistic) ÷ 6 · auto-saved in your browser