A SaaS metrics calculator helps founders, operators, and investors quickly assess the health of a subscription business. Key metrics like MRR, ARR, LTV, churn rate, and CAC payback period reveal whether a business is growing sustainably or burning through cash. Enter your numbers below to get an instant dashboard with health benchmarks.
Business Inputs
Revenue
Growth & Churn
Unit Economics
Benchmark Comparison
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How to Use the SaaS Metrics Calculator
Running a SaaS business without tracking the right metrics is like flying blind. This SaaS metrics calculator consolidates the most important KPIs — MRR, ARR, churn rate, LTV, and CAC payback — into one instant dashboard so you can identify strengths and problem areas at a glance.
Step 1: Enter Your Revenue and Customer Data
Start by entering your current Monthly Recurring Revenue (MRR) and total number of active paying customers. MRR is your normalized monthly subscription revenue — exclude one-time fees and non-recurring charges. Your ARPU (Average Revenue Per User) will be auto-calculated from MRR ÷ customers, or you can enter it directly.
Step 2: Add Churn and Acquisition Numbers
Enter how many customers cancelled this month (logo churn) and how many new customers you acquired. These numbers feed the churn rate and net growth calculations. For the most accurate picture, use a trailing 3-month average rather than a single month's data if your numbers fluctuate seasonally.
Step 3: Enter CAC and Gross Margin
Customer Acquisition Cost (CAC) is your total sales and marketing spend divided by the number of new customers acquired in the same period. Gross margin is revenue minus cost of goods sold (hosting, infrastructure, customer support) expressed as a percentage. Most SaaS companies operate at 70–85% gross margins. These two inputs unlock the LTV:CAC ratio and CAC payback period.
Step 4: Interpret the Results
Results are color-coded against industry benchmarks. Green means healthy, yellow means watch this closely, and red indicates a metric that needs urgent attention. Key benchmarks to target: LTV:CAC above 3×, monthly churn below 2%, and CAC payback under 12 months. The benchmark comparison table shows exactly where you stand and what to focus on.
Understanding Logo Churn vs Revenue Churn
Logo churn counts the percentage of customers who cancel each month. Revenue churn measures the percentage of MRR lost. They differ when customers downgrade without cancelling. If expansions from existing customers outpace cancellations, you can achieve "net negative churn" — where revenue grows even without adding new customers. This is the gold standard for SaaS growth efficiency.
Privacy
All calculations run entirely in your browser. Your revenue, customer counts, and other business data are never transmitted to any server. This tool works offline once loaded and never stores any information.
For a detailed walkthrough, see our guide: SaaS Metrics Benchmarks 2026.
FAQ
What is a good LTV:CAC ratio for a SaaS company?
A healthy LTV:CAC ratio is 3:1 or higher — meaning a customer generates at least 3× what it cost to acquire them. Ratios below 1:1 mean you are losing money on every customer. Ratios above 5:1 may indicate you are under-investing in growth and could acquire customers more aggressively.
What is a good monthly churn rate for SaaS?
For B2B SaaS, a monthly churn rate below 1–2% (12–24% annually) is considered healthy. Consumer SaaS often sees higher churn of 3–5% per month. Enterprise SaaS companies typically aim for below 0.5% monthly churn. Churn above 5% per month is a significant warning sign requiring urgent attention.
What is CAC payback period and why does it matter?
CAC payback period is the number of months needed to recover the cost of acquiring a customer through their gross margin contribution. Under 12 months is generally considered healthy for B2B SaaS; under 18 months is acceptable. Longer payback periods mean more upfront cash is tied up in customer acquisition, which can strain cash flow for growing businesses.
How is customer LTV calculated?
Customer Lifetime Value (LTV) = ARPU × Gross Margin % / Monthly Churn Rate. For example, if ARPU is $100/month, gross margin is 70%, and monthly churn is 2%, LTV = $100 × 0.70 / 0.02 = $3,500. This represents the expected total gross profit generated by an average customer over their lifetime with your product.
What is the difference between logo churn and revenue churn?
Logo churn (or customer churn) measures the percentage of customers who cancel each month. Revenue churn measures the percentage of MRR lost each month. They differ when customers downgrade without fully cancelling. Revenue churn can even be negative (net negative churn) when expansions from existing customers exceed cancellations — a hallmark of elite SaaS companies.
Is this SaaS metrics calculator free to use?
Yes, this SaaS metrics calculator is completely free with no account required. All calculations run locally in your browser — your business data is never sent to any server. You can use it as many times as needed for different scenarios, business units, or planning periods.
What is ARR and how is it different from MRR?
MRR (Monthly Recurring Revenue) is the normalized monthly subscription revenue. ARR (Annual Recurring Revenue) is simply MRR × 12. ARR is commonly used for annual planning, investor reporting, and benchmarking against other companies. MRR is more useful for tracking month-to-month growth, churn, and operational metrics.