What is a North Star Metric?
A north star metric (NSM) is the single measurement that best represents the value your product creates for users. It serves as the organizing principle for the entire company: every team's OKRs, experiments, and roadmap decisions should ultimately connect to improving this metric.
Unlike revenue or profit (which measure value extraction), the north star metric measures value creation. The insight: if you consistently deliver more value to users, the business metrics follow.
Why the North Star Metric Matters
Companies without a north star metric have teams pulling in different directions. Marketing optimizes for signups. Product optimizes for engagement. Sales optimizes for deal size. None of them are wrong, but they are not aligned.
A shared NSM creates clarity. When the product team asks "should we build Feature A or Feature B?" the answer is: which one moves the north star more? This simplifies prioritization and resolves cross-team debates.
How to Define Your North Star Metric
The metric should capture user value delivery. For Airbnb, it is "nights booked." For Spotify, it is "time spent listening." For Slack, it is "messages sent." Each reflects the core action that proves users are getting value.
Test your candidate metric against three criteria: Does it reflect value delivery? (If it goes up, are users happier?) Is it leading? (Does it predict future revenue growth?) Can multiple teams influence it? (Not just one function.)
Break the NSM into a metric tree. The north star sits at the top. Below it are the input metrics that drive it. Each input metric is owned by a specific team. This gives teams clear sub-goals that connect to the bigger picture.
North Star Metrics in Practice
Facebook's early north star was "7 friends in 10 days." They discovered that users who connected with at least 7 friends in their first 10 days had significantly higher retention. This focused the entire product team on the connection experience.
Amplitude defines their north star as "Weekly Learning Users," the number of users who share a learning (an insight from data) each week. This captures value delivery: if users are generating and sharing insights, Amplitude is working.
Common Pitfalls
- Choosing revenue. Revenue measures what you extract from users, not what you deliver. Revenue follows value; it does not define it.
- Choosing a vanity metric. Page views and registered users can grow while the business declines. The NSM must correlate with long-term health.
- Not decomposing it. A north star that no team can specifically influence is inspiring but not actionable. Break it into input metrics.
- Never updating. As the business evolves, the NSM may need to change. A pre-PMF startup and a scaled company need different north stars.
Related Concepts
The north star metric is the centerpiece of the north star framework. It decomposes into a metric tree of input metrics. It aligns with OKRs at the team level and is tracked through product analytics. For understanding metric types, see leading vs. lagging metrics.