AppSumo
Software marketplace with deals commonly used by founders and creators.
Visit tool →Calculate logo churn—the percent of customer accounts lost in a period.
Results are simplified estimates for educational purposes only and should not be treated as financial, accounting, legal, or tax advice. See our disclaimer for details.
Use this logo churn calculator to measure the percentage of customer accounts lost during a period, regardless of how much revenue each account represented. SaaS founders and customer success teams use it when account count matters as much as dollars. Enter logos churned and logos at period start; the result is logo churn rate. Compare with Revenue Churn, Churn Rate, NRR, or GRR when large accounts skew the dollar picture.
Lost logos ÷ starting logos × 100.
Using the default example values from the JSON seed for this tool:
Result: 4.29% (Logo churn rate)
Lost customer logos ÷ starting logos for the window you measured.
Ignores revenue dollars—whale contractions can lurk quietly while counts look stable.
Label involuntary failed payments distinctly when Ops allows.
Logo churn can look calm while MRR drops fast—pair with dollar churn when big accounts move.
Layer revenue churn, expansion MRR share, NRR or GRR when dollar stories disagree with logos.
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Software marketplace with deals commonly used by founders and creators.
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Visit tool →Customers lost ÷ beginning cohort × 100 in the observation window—you define "lost."
Open calculator →Share of starting MRR kept after churn and contraction-dollar losses—before deliberate upsell credit.
Open calculator →Ending expansion-adjusted recurring revenue indexed to starting baseline for the cohort window.
Open calculator →Recurring revenue lost from downgrades and cancellations compared with recurring revenue at the start of the period.
Open calculator →Disclosure: Some links on this page may be affiliate links. If you sign up or make a purchase through these links, FounderCalc may earn a commission at no extra cost to you. We only recommend tools that are relevant to the calculator topic.