Engineering Tools
Release Forecast Calculator
Forecast release timing from backlog points, team velocity, sprint cadence, and a realistic velocity range.
Expected completion
8 sprints
Oct 2, 2026
Optimistic window
6 sprints
Sep 4, 2026
Conservative window
9 sprints
Oct 16, 2026
Velocity range used
28-40
points per sprint
Exact expected
7.06 sprints
Exact optimistic
6.00 sprints
Exact conservative
8.57 sprints
Method
How it Works
Release forecasting uses velocity as an input to estimate when a backlog can be completed.
- Calculates expected sprints to completion from remaining backlog points divided by average velocity.
- Uses a velocity range to produce optimistic and conservative completion windows, not false precision.
- Converts sprint count into projected dates using sprint length and selected forecast start date.
Field Definitions
- Remaining backlog points: Total story points still open before the release can be considered complete.
- Average velocity: Central planning throughput in points per sprint, typically based on recent delivered sprints.
- Conservative velocity: Lower-bound throughput assumption (points per sprint) used for late-date, risk-aware planning.
- Optimistic velocity: Upper-bound throughput assumption (points per sprint) used for best-case forecast windows.
- Sprint length: Number of weeks per sprint used to convert sprint counts into calendar completion dates.
- Forecast start date: Calendar date from which forecasted sprint durations are added to estimate completion windows.
FAQ
Frequently Asked Questions
+How is release forecasting different from velocity?
Velocity measures throughput history; forecasting translates that throughput into a likely completion window for remaining scope.
+Should I forecast from one number or a range?
Use a range. Sprint delivery naturally varies, so range-based forecasting is more reliable than a single-point date.
+What breaks forecast accuracy most often?
Major scope changes, team composition changes, and unstable sprint cadence can invalidate prior velocity trends.
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