Growth Calculator
Enter your current monthly revenue, your recent growth rate, and a target. The calculator shows how many months you're on pace to hit it, and what growth rate you'd actually need to get there faster.
How the math works
The calculator uses compound monthly growth, the same math behind compound interest, because revenue growth compounds the same way — each month's growth builds on the previous month's already-larger base, not on your original starting number.
Months to target at your current rate
The formula is: months = log(target ÷ current) ÷ log(1 + monthly growth rate). If you're currently at $50,000/month growing 4% monthly and your target is $100,000/month, you need revenue to roughly double. log(2) ÷ log(1.04) works out to about 17.7 months — just under a year and a half at your current pace.
Required growth rate for a fixed timeline
If you want to hit that same target in a specific number of months instead — say, 12 — the formula inverts: required rate = (target ÷ current)^(1 ÷ months) − 1. Doubling revenue in 12 months requires 2^(1/12) − 1 ≈ 5.9% compound monthly growth, meaningfully higher than the 4% you're currently running. That gap — 4% actual versus 5.9% required — is the real number that should drive your next quarter's priorities, not a vague sense that you "need to grow faster."
Why compounding changes the answer
A common mistake is estimating growth with simple math: "I need to add $50,000 over 12 months, so that's about $4,200 a month." That undercounts the effect of compounding. Early months need less absolute dollar growth than later months, because later months are growing off a bigger base. Compound math front-loads less pressure and back-loads more, which is a more realistic planning assumption than a flat monthly dollar target.
What to do with the number
Gap under 1 point
If your required rate is within about a point of your current rate, small operational fixes — faster lead response, a modest price increase, tighter follow-up — are usually enough to close it without a major initiative.
Gap of 1-3 points
This usually calls for a specific new lever: a new lead channel, an upsell motion, or a pricing correction (see our guide on raising prices). One deliberate change, tracked monthly.
Gap over 3 points
Large gaps often mean the target itself needs revisiting, or the timeline needs to extend. Sustained double-digit monthly compound growth is rare outside of very early-stage or highly seasonal businesses — treat an aggressive gap as a flag to sanity-check the target, not just a call to "hustle harder."