Free SaaS & Marketing Calculators
Nine free unit economics and growth calculators for SaaS and B2B teams, CAC, LTV, ROAS, LTV:CAC, payback period, budget planning, churn, and funnel analysis.
Want connected metrics? Try the Growth Dashboard to model scenarios and compare benchmarks across all metrics.
CAC Calculator
Measure how much you spend to acquire each new customer by dividing total acquisition spend by new customers acquired.
CAC = Total Acquisition Spend ÷ New Customers Acquired
LTV Calculator
Estimate the total revenue a customer generates over their relationship with your business.
LTV = (ARPU × Gross Margin) ÷ Churn Rate
LTV:CAC Ratio
Compare customer lifetime value to acquisition cost to assess whether your growth is profitable and sustainable.
LTV:CAC Ratio = LTV ÷ CAC
ROAS Calculator
Measure how much revenue your advertising generates for every dollar spent.
ROAS = Revenue from Ads ÷ Ad Spend
CAC Payback Period
Find how many months it takes to recover the cost of acquiring a customer through their gross margin contribution.
Payback Period = CAC ÷ (ARPU × Gross Margin)
Break-even ROAS
Determine the minimum ROAS required to break even after accounting for gross margin and other variable costs.
Break-even ROAS = 1 ÷ Gross Margin
Budget Planner
Reverse-engineer the marketing spend needed to hit revenue targets based on funnel metrics and CAC.
Budget = Target Customers × CAC
Churn Impact
Quantify how monthly churn affects revenue, LTV, and the value of retention improvements.
Revenue at Month N = Starting MRR × (1 − Churn)^N
Funnel Planner
Model conversion rates at each funnel stage to forecast leads, opportunities, and closed revenue.
Customers = Traffic × Visit-to-Lead × Lead-to-Opp × Opp-to-Close