Calculateur de Churn Rate
Calculate customer churn rate for a period.
Formula and method
This calculator computes Churn rate directly in your browser without sending data to an external server.
Mathematical formula
- Churn rate:
lost ÷ start × 100
Variables and parameters
- Customers lost (lost): default value 35.
- Customers at start (start): default value 1000.
Some formulas are undefined for certain input combinations (such as division by zero or logarithms of non-positive numbers). In those cases the live tool displays an alert instead of NaN.
Embed this tool
Paste this snippet into your own site or blog post to embed a live, working copy of this tool. It links back to the full page on SpecWhale.
Frequently asked questions
What equation and variables does Churn Rate Calculator use?
Churn Rate Calculator evaluates outputs such as <strong>Churn rate</strong> based on inputs including Customers lost, Customers at start. Check the Mathematical Method section for the explicit formula.
What happens if I enter invalid or zero values into Churn Rate Calculator?
If an input combination is mathematically undefined (such as division by zero or negative square roots), SpecWhale alerts you gracefully rather than returning invalid NaN outputs.
Are my calculations in Churn Rate Calculator saved or private?
All calculations are 100% private and run locally in your Web browser. Your numbers are never uploaded to any server, but can be saved locally to your device or exported as CSV/JSON.
Is Churn Rate Calculator free to use?
Yes. Churn Rate Calculator is completely free, has no usage limit, and does not require an account, email, or API key.
Does Churn Rate Calculator store or upload my data?
No. Churn Rate Calculator calculates everything locally in your browser. Nothing you type is sent to a server or stored by SpecWhale.
How accurate is Churn Rate Calculator?
Churn Rate Calculator uses a standard formula (see the Method section above for the exact expression). For high-stakes financial, medical, or legal decisions, confirm the result with a professional or an authoritative source before relying on it.
Can I embed Churn Rate Calculator on my own website?
Yes. Use the "Embed this tool" snippet on this page to add a free, working copy of Churn Rate Calculator to your own blog post or page.