Growth calculator
Startup Growth Model Calculator
Model the customers, leads, traffic, and budget required to move from current monthly revenue to a target monthly revenue level.
Results
Results are deterministic scenario outputs, not guarantees.
Enter values and calculate to see the summary, supporting metrics, warnings, and interpretation.
Interpretation
Deterministic interpretation rules will explain what the modeled result means once a calculation is available.
Detailed breakdown
Intermediate calculation rows will appear here after calculation.
Formula
Current customers
currentCustomers = existingCustomers ?? currentMonthlyRevenue / averageMonthlyRevenuePerCustomer
Target customers
targetCustomers = targetMonthlyRevenue / averageMonthlyRevenuePerCustomer
Monthly churn
churnedCustomers(month) = startingCustomers(month) × monthlyCustomerChurnRate
Paid customers required
paidCustomersRequired = requiredPaidNewCustomersPerMonth × targetMonths
Leads required
leadsRequired = paidCustomersRequired / leadToCustomerRate
Traffic required
visitorsRequired = leadsRequired / visitorToLeadRate
Ad spend required
adSpendRequired = visitorsRequired × averageCpc
Assumptions
- Current customers are inferred from revenue and ARPC unless an existing customer count is entered.
- The model solves for a constant paid new customer requirement per month over the target window.
- Organic new customers reduce the paid acquisition requirement before leads, traffic, and spend are calculated.
- Outputs are deterministic scenario math, not forecasts or guarantees.
Worked example
Example: moving from $50k to $100k MRR
If a startup has $50,000.00 in monthly revenue, $500.00 ARPC, 3% monthly churn, and a 12-month target window, the model estimates the paid acquisition pace needed after organic customers and churn replacement.
FAQ
Does this calculator forecast startup growth?
No. It models what would be required under the assumptions entered; it does not predict that those assumptions will occur.
How does organic acquisition affect the budget requirement?
Organic new customers are applied before the paid customer gap is translated into leads, traffic, and ad spend.
Why include sales and onboarding capacity?
Capacity limits show when the modeled acquisition pace may exceed operational constraints even if media budget is available.
Related calculators
Want help interpreting the model?
Use this calculator as a deterministic planning tool, then talk with Propel Collective about which assumptions are worth validating first.