Business & SaaS Metrics Calculators
7 tools in this collection — free, instant, and private in your browser.
Business and SaaS metrics calculators help founders, operators, and finance teams cut through spreadsheet complexity and focus on the numbers that actually move the needle. Whether you are running a bootstrapped startup or a venture-backed SaaS company, a handful of core metrics determine whether your business is growing sustainably or quietly bleeding cash.
Customer acquisition cost (CAC) and customer lifetime value (LTV) sit at the heart of every growth model. The LTV:CAC ratio tells you whether the economics of bringing in a new customer are worth the spend — a ratio above 3:1 is commonly cited as a healthy baseline for SaaS businesses. Pair that with the SaaS Magic Number, which measures how efficiently new revenue is generated per dollar of sales and marketing spend, and you have a clear read on go-to-market efficiency.
On the operational side, gross margin and EBITDA reveal how much of each revenue dollar survives after costs. Gross margin is especially critical in SaaS because it sets a ceiling on long-run profitability; software businesses typically target 70-80 percent. EBITDA strips out financing and accounting decisions to show operating performance in isolation, making it the standard yardstick for valuation multiples.
Cash management tools round out the toolkit. Burn rate tells you how fast you are consuming cash reserves, and working capital shows whether short-term assets cover short-term obligations. Churn rate tracks the percentage of customers or revenue lost each period — even a modest monthly churn compounds into dramatic annual losses, so understanding it early is essential.
- Use the Burn Rate Calculator to determine your runway before your next fundraise or revenue milestone.
- Use the LTV:CAC Ratio Calculator alongside the Customer Lifetime Value Calculator to stress-test your growth assumptions.
- Use the SaaS Magic Number Calculator to benchmark go-to-market efficiency quarter over quarter.
- Use the Gross Margin and EBITDA Calculators together to build a complete picture of unit economics.
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| Tool | What it does |
|---|---|
| Burn Rate Calculator | Calculate your net monthly burn rate and cash runway from cash on hand, monthly expenses, and monthly revenue. |
| Customer Lifetime Value Calculator | Calculate customer lifetime value (CLV / LTV) from average revenue, gross margin, and churn, including the average customer lifespan. |
| EBITDA Calculator | Calculate EBITDA and EBITDA margin from net income plus interest, taxes, depreciation, and amortization — or build it up from operating income. |
| Gross Margin Calculator | Calculate gross profit, gross margin percentage, and the equivalent markup from revenue and cost of goods sold (COGS). |
| LTV:CAC Ratio Calculator | Calculate your LTV:CAC ratio from customer lifetime value and customer acquisition cost, with a payback period and a health verdict. |
| SaaS Magic Number Calculator | Calculate the SaaS magic number from new ARR and prior-quarter sales and marketing spend, with an implied CAC payback and an efficiency verdict. |
| Working Capital Calculator | Calculate net working capital, the current ratio, and the quick (acid-test) ratio from current assets, inventory, and current liabilities. |
Frequently asked questions
- What is a healthy LTV:CAC ratio for a SaaS company?
- A ratio of 3:1 is widely used as a minimum benchmark, meaning the lifetime value of a customer should be at least three times the cost to acquire them. Ratios above 5:1 often indicate underinvestment in growth, while ratios below 3:1 suggest customer acquisition is too expensive relative to the value delivered.
- How is burn rate different from operating expenses?
- Burn rate specifically measures the net cash consumed each month, taking into account both expenses and any revenue coming in. Operating expenses are an accrual accounting figure that can include non-cash items like depreciation. Burn rate is the more relevant metric for startups focused on cash runway.
- Why does churn rate matter so much for SaaS businesses?
- In a subscription model, revenue is earned over time rather than upfront, so losing customers early destroys the compounding value of a recurring revenue stream. Even a 2-3 percent monthly churn rate results in losing roughly a quarter of your customer base every year, which forces constant replacement just to maintain flat revenue.