How the calculator works
It assumes your MRR keeps growing at the same rate every month (compound growth). At 8% a month, $2,500 MRR becomes $2,700 the next month, then $2,916, and so on. The time to your target is the first whole month where the projection reaches it.
Compound monthly growth rate (CMGR)
The “work it out from your history” box uses the standard formula: CMGR = (MRR now ÷ MRR back then)^(1 ÷ months) − 1. Going from $1,000 to $2,500 in 6 months is a little under 16.5% a month. It smooths out good and bad months into one average rate.
Read the result with care
- Growth rarely stays constant. Early on, a few customers move the rate a lot; it usually slows as MRR grows.
- Churn is already inside your real growth rate if you computed it from your history.
- ARR here is simply MRR × 12, the usual shortcut for subscription businesses.
Hit the milestone? Show it.
When you cross $1K, $5K or $10K MRR, MotionMRR turns the real curve from your payment provider into a short video, with a verified badge instead of an editable screenshot. Works with Stripe, Lemon Squeezy and more. Need ideas for the post? Read MRR milestone post ideas.