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SaaS and SEO calculators

26 calculators for the numbers a SaaS team gets asked about. Each one shows its formula and how to read the result. No sign-up, and nothing you enter leaves your browser.

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SEO ROI calculator

Enter your organic traffic, how it converts and what a customer is worth. The calculator works out the revenue organic search brings in each month and the return on what you spend to get it.

  • Shows the formula it uses
  • Explains how to read the result
  • Runs in your browser
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Return on SEO spend

2,300%

Revenue from organic a month
$120,000
New customers a month
30
SEO cost per customer
$167

Example values. Enter your own on the calculator.

SEO and AI search

5

SEO ROI

Turn organic traffic into revenue and compare it with what you spend on SEO each month.

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Organic traffic value

What it would cost to buy your organic clicks as ads instead of earning them.

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AI Overview traffic loss

Estimate the clicks and value you lose when Google answers a search with an AI Overview.

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Keyword traffic potential

What a keyword is worth if you rank for it: visits, conversions and revenue.

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Content cost per page

What each published page really costs you, and what each page that ranks costs.

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Revenue

5

MRR

Monthly recurring revenue from your customer count and average revenue per account.

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ARR growth

Ending ARR, net new ARR and growth from new, expansion, contraction and churn.

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ARPU

Average revenue per user or account, monthly and annual.

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ACV

Annual contract value from a contract's total value and length.

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CMGR

Compound monthly growth rate between two values, and what it annualises to.

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Acquisition

9

CAC

Customer acquisition cost from sales and marketing spend and new customers won.

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Customer lifetime value

LTV from average revenue per account, gross margin and churn.

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LTV to CAC ratio

How many times over a customer repays what it cost to win them.

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CAC payback

How many months of gross profit it takes to earn back what a customer cost.

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Conversion rate

The share of visitors who convert, and what more traffic or a better rate would add.

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SaaS funnel

Work forwards from visitors to customers through each stage of the funnel.

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Cost per lead

Cost per lead and, with your close rate, cost per customer.

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ROAS

Return on ad spend: revenue earned for every dollar spent on ads.

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Break-even ROAS

The lowest return on ad spend at which a campaign stops losing money.

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Retention

3

Net revenue retention

NRR and gross revenue retention from expansion, contraction and churn.

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Churn rate

Monthly customer churn, what it compounds to over a year, and average customer lifetime.

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Activation rate

The share of new sign-ups who reach the moment your product becomes useful.

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Efficiency

4

Burn multiple

How much cash you burn for every dollar of net new ARR.

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SaaS quick ratio

Recurring revenue gained for every dollar lost to churn and contraction.

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Rule of 40

Growth rate plus profit margin, against the 40% rule of thumb.

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SaaS magic number

How much annualised revenue each dollar of sales and marketing spend creates.

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Want organic growth in these numbers?

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