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SaaS Quick Ratio Calculator

Enter new, expansion, churned, and contraction MRR to find the SaaS quick ratio.

How to use

  1. Enter your values in the fields above.
  2. Press Calculate to see your result instantly.
  3. Use the Share button to copy a link to your result.

About this calculator

The SaaS quick ratio, a metric popularized by venture investor David Skok, measures growth efficiency by comparing revenue gained to revenue lost in a period: (new MRR + expansion MRR) ÷ (churned MRR + contraction MRR). A ratio of 4 means you’re adding four dollars of new and expansion revenue for every dollar lost to churn and downgrades — a commonly cited threshold for healthy, capital-efficient growth.

Unlike net revenue retention, which only looks at the existing customer base, the quick ratio includes new-customer revenue in the numerator, making it a broader gauge of whether growth is outrunning leakage. SaaS founders, operators and the VCs who fund them track this ratio alongside NRR and churn to sanity-check whether topline growth is being quietly eaten by churn under the surface. This calculator takes your new, expansion, churned, and contraction MRR to compute the quick ratio.

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