How to Choose Your North Star Metric
A practical guide to choosing a north star metric for your startup, with examples by business model and a framework for aligning your team around it.
What a North Star Metric Actually Is
A north star metric (NSM) is the single number that best captures the core value your product delivers to customers. It sits between "is revenue growing?" (a lagging indicator) and "are people clicking things?" (a leading indicator that may or may not matter).
The north star metric answers: are we delivering value at scale?
When it goes up consistently, revenue follows. When it stagnates, you have a signal to act before the revenue line shows it.
What a North Star Metric Is Not
- It's not revenue or ARR (that's an output, not a signal of value)
- It's not a vanity metric like signups or page views
- It's not a composite or calculated score — it should be a simple, unambiguous number
- It's not permanent — it should evolve as your business model matures
Examples by Business Type
Different business models produce fundamentally different value. Your NSM should reflect yours:
SaaS / Productivity Tools
- Notion: number of documents created per week
- Slack: messages sent per active team
- Figma: collaborative files edited
Marketplaces
- Airbnb: nights booked
- Uber: rides completed
- Faire: GMV between buyers and sellers
Consumer / Social
- Facebook (early): daily active users
- Spotify: time spent listening
- Duolingo: daily active learners
E-commerce
- Amazon: purchases per customer per year
- Shopify (merchant-side): stores generating revenue
B2B / Enterprise
- HubSpot: active contacts managed
- Salesforce: deals tracked in pipeline
Notice the pattern: the NSM is always a measure of value exchanged, not just activity or presence.
How to Choose Yours
Work through these three questions:
1. What is the core action that signals a customer is getting value?
Not signing up. Not visiting. The moment they actually get what they came for. For a project management tool, that might be a task completed. For an analytics tool, it might be a dashboard viewed and acted on.
2. Does this metric correlate with retention and revenue?
Test it. Pull your cohort data and see whether users who hit this action in the first week retain better than those who don't. If the correlation is strong, you're onto something. If it's weak, keep looking.
3. Can every team influence it?
A good NSM is cross-functional. Engineering, product, marketing, sales, and customer success should all be able to point to work that moves it. If only one team can affect it, it's a team metric, not a north star.
The Formula Approach
Some teams find it helpful to think of the NSM as a formula:
NSM = [who is doing it] × [the core action] × [frequency]
For example:
- Weekly active teams sending 10+ messages (Slack-style)
- Monthly buyers completing a repeat purchase (e-commerce)
- Active projects with tasks completed this week (project management)
This helps you decompose the metric into things you can actually influence.
Aligning Your Team Around It
Choosing the metric is 20% of the work. Getting the team to actually use it is the other 80%.
Make it visible. Put it on a shared dashboard everyone checks. Weekly all-hands should open with it.
Decompose it into sub-metrics by team. If your NSM is "weekly active teams," then:
- Growth team owns new teams reaching activation
- Product team owns activation rate
- Customer success owns teams at risk of going inactive
Tie it to planning. Every project proposal should answer: how does this move the NSM, and by how much?
Review weekly, not monthly. Monthly review cycles are too slow to catch problems early.
When to Change Your North Star Metric
Your NSM should stay stable for at least 6–12 months. Changing it constantly creates noise and erodes trust in the metric itself.
Signs it's time to revisit:
- Your business model has fundamentally shifted
- The metric is growing but revenue is not (correlation broke)
- You've moved from PLG to enterprise sales, or vice versa
When you change it, document why. Future you will want to know.