SaaS Magic Number Calculator
Sales & marketing efficiency — new ARR generated per dollar of prior-quarter S&M spend, with the invest/fix verdict.
Formula
The magic number measures whether spending more on sales actually buys growth. Above 1.0, every marketing dollar returns more than a dollar of ARR within a year — pour fuel on the fire. Below 0.75, scaling spend just burns cash faster; fix conversion, retention or targeting first.
Not financial advice — for informational and analytical use only. Verify all figures with a qualified professional before acting on them.
Need saas magic number calculator results fast? Analysts, founders, traders and finance professionals use the SaaS Magic Number Calculator to skip the spreadsheet and get a defensible answer in one step — free, private and instant.
About SaaS Magic Number Calculator
Sales & marketing efficiency — new ARR generated per dollar of prior-quarter S&M spend, with the invest/fix verdict. The magic number measures whether spending more on sales actually buys growth. Above 1.0, every marketing dollar returns more than a dollar of ARR within a year — pour fuel on the fire. Below 0.75, scaling spend just burns cash faster; fix conversion, retention or targeting first. The governing relationship is magic number = net new ARR / prior-quarter S&M spend. The SaaS Magic Number Calculator computes entirely in your browser — free, private (your figures never leave your device) and instant, recalculating live as you change any input.
How to use SaaS Magic Number Calculator
- 1Enter Net new ARR this quarter (currency), Prior-quarter S&M spend (currency) into the SaaS Magic Number Calculator.
- 2The result is computed automatically using magic number = net new ARR / prior-quarter S&M spend — there is no button to press.
- 3Change any input to model a different scenario, then copy or share the result.
Why use SaaS Magic Number Calculator?
- ✓Computes saas magic number calculator instantly with the correct formula — no spreadsheet needed
- ✓100% free and unlimited, with no sign-up, login or paywall
- ✓Runs entirely in your browser, so the figures you enter stay private
- ✓Shows the formula, a live worked example and references so you can defend the number
Frequently asked questions
What is the formula behind the SaaS Magic Number Calculator?+
SaaS Magic Number Calculator uses magic number = net new ARR / prior-quarter S&M spend. The magic number measures whether spending more on sales actually buys growth. The tool substitutes your actual inputs into this relationship and shows the worked example step by step.
What inputs does the SaaS Magic Number Calculator need?+
Enter Net new ARR this quarter (currency), Prior-quarter S&M spend (currency) and the result updates immediately — there is no button to press. Change any value to model a different scenario in real time.
Is the SaaS Magic Number Calculator free, and is my data private?+
Yes — it is completely free with no sign-up or usage limit, and it runs entirely in your browser, so the numbers you enter are never uploaded or stored on any server. It is for informational and analytical use, not financial advice.
What should I watch out for when using the SaaS Magic Number Calculator?+
Above 1.0, every marketing dollar returns more than a dollar of ARR within a year — pour fuel on the fire. Below 0.75, scaling spend just burns cash faster; fix conversion, retention or targeting first.
What is the SaaS Magic Number Calculator based on?+
The method follows authoritative sources: Scale Venture Partners — the SaaS magic number. The formula and references are shown on the page so you can verify and cite the result.
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