Months to Double
At the current rate, how long until MRR doubles — momentum as a timeline anyone can grasp.
What is it?
Months to Double answers the most intuitive growth question there is: at the current rate, how long until MRR is twice what it is today? It turns an abstract percentage into a concrete timeline anyone can grasp.
It is the friendliest way to communicate momentum. 'Growing 4% a month' lands softly; 'doubling every eighteen months' lands hard — and the two say the same thing.
How to calculate?
Divide the natural log of two by the natural log of one plus the monthly growth rate: ln(2) ÷ ln(1 + growth). A 4% monthly rate doubles in about 17.7 months. Feed it a smoothed rate, since doubling time is very sensitive to the growth input.
Read it as a snapshot of the current pace, not a schedule — it stretches or shrinks the instant your growth rate moves.