Score ideas by Reach × Impact × Confidence ÷ Effort to compare them on one scale.
When to use itWhen a backlog of competing ideas needs a defensible first-pass ranking.
Reach
How many people will this affect in a set period? For example, 500 customers per quarter.
Impact
How much will it move the goal for each person? 3 massive, 2 high, 1 medium, 0.5 low, 0.25 minimal.
Confidence
How sure are you about the estimates? 100% high, 80% medium, 50% low.
Effort
Total person-months across product, design and engineering.
Score and sanity-check
Score = (Reach × Impact × Confidence) ÷ Effort. Use the ranking to start the conversation, not to end it.