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7 SaaS Metrics Every Founder Must Track (Free Calculators)

LTV, CAC payback, the Rule of 40, NRR and more — free calculators with the exact formulas.

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Customer Lifetime Value (LTV) Calculator

Project the total margin a customer delivers over their lifetime.

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CAC Payback Period Calculator

Months to recover acquisition cost from gross margin.

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SaaS Rule of 40 Calculator

Check if growth rate plus profit margin clears the 40% health bar.

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Net Revenue Retention (NRR) Calculator

Measure expansion versus churn on existing customers.

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SaaS Magic Number Calculator

Sales efficiency from new ARR versus prior sales & marketing spend.

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ARPU Calculator

Average revenue per user from total revenue and customer count.

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SaaS Quick Ratio Calculator

Compare MRR gained vs lost to gauge how efficiently you grow.

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Unit Economics Calculator

LTV, CAC and payback per customer in one view.

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