North-Star Metric Target Calculator
Turn a north-star metric goal into the monthly growth rate — and the absolute monthly gain — needed to hit it in your timeframe.
How it works
Monthly growth = (target ÷ current)^(1 ÷ months) − 1 · Flat monthly gain = (target − current) ÷ months
A north-star goal only becomes actionable once it is expressed as a rate the team can plan against. The compounding growth rate — the CAGR applied monthly — tells you the percentage you must add each month for growth to snowball to the target on time. The flat monthly gain shows the same goal as a steady absolute number, which is often easier to hold teams accountable to week over week.
Worked example
Growing a north-star from 10,000 to 50,000 in 12 months is a 5× increase. The required compounding rate is (50,000 ÷ 10,000)^(1/12) − 1 ≈ 14.35% per month. As a flat target it is (50,000 − 10,000) ÷ 12 ≈ 3,333 added every month.
Frequently asked questions
Should I plan to compounding or flat growth?
Compounding growth reflects how most products actually scale — each month builds on a larger base — so the percentage rate is the more realistic planning number. The flat gain is a useful sanity check and a simpler team target early on.
What makes a good north-star metric?
One that captures the core value customers get and correlates with durable revenue — active users who hit a key action, weekly transacting accounts, or delivered value units. Vanity totals that only ever rise make poor north-stars.
Why is the required rate so high for big jumps?
Compounding cuts both ways: a 5× goal in a year demands roughly 14% a month, but the same 5× over two years needs only about 7% a month. Extending the timeframe dramatically lowers the monthly rate required.
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Educational estimate, not financial advice.