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Business Metrics

Calculate CAC, LTV, churn impact, and ad spend ROI. Evaluate SaaS health, FBA margins, and novated lease costs.

6 tools available

If you've ever stared at a spreadsheet trying to figure out your customer acquisition cost or whether that novated lease actually saves you tax, these tools are for you. They cover the core metrics founders and finance teams work with day to day — CAC, LTV, churn, CPM, SaaS ratios, FBA profit margins. The formulas are drawn from standard business and accounting practices, and each tool shows its working so you can verify the output. Everything runs locally, so sensitive revenue and cost figures stay on your machine.

SaaS founders evaluating growth health should start with the Churn, LTV & CAC Runway Calculator — it models how quickly you're burning through customer lifetime value relative to acquisition spend, and projects your runway at current churn rates. Pair it with the CPM & Digital Ad Spend ROI Calculator when evaluating whether a Facebook or Google campaign is actually profitable after factoring in impressions, click-through rates, and conversion fractions.

Amazon FBA sellers face a different challenge: the Margin & Profit Estimator accounts for referral fees, fulfilment charges, storage costs, and shipping — not just the product price — so you see the real margin before committing to inventory. For service-based businesses, the Freelance Project Scope & Budget Estimator helps you break a project into phases, allocate hours per phase, and calculate a fee that covers your actual costs plus target profit margin.

Electric vehicle owners evaluating a novated lease can use the EV or PHEV Novated Lease Calculator to compare pre-tax and post-tax costs, factoring in running costs, fringe benefits tax, and residual value. The output shows total cost of ownership over the lease term versus buying outright.

How to choose the right tool

Know your metric. Customer acquisition cost and lifetime value are the foundation — start with the SaaS Churn, LTV & CAC Runway Calculator if you're evaluating growth health. For advertising ROI, use the CPM Calculator with your actual campaign data.

Validate before committing. Run your numbers through multiple tools: if the FBA Margin Estimator shows thin margins, check whether the CPM Calculator suggests the ad spend is sustainable. Cross-referencing tools gives you a more complete picture than any single metric.

Common use cases

SaaS founder evaluating growth health — Run your churn rate and CAC through the SaaS Churn, LTV & CAC Runway Calculator to see your months of runway at current burn.

FBA seller assessing product viability — The Amazon FBA Margin Estimator accounts for referral fees, fulfilment charges, and storage — not just the product price.

Agency quoting a project — The Freelance Project Scope & Budget Estimator breaks work into phases with hourly allocations, ensuring your fee covers actual costs plus target margin.