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Churn Rate Calculator

Calculate customer and revenue churn with cohort analysis and MRR impact. 100% private. 100% private.

100% Private Works Offline Instant

Period presets:

Customers (start)

Customers (end)

New customers

MRR (start) $

MRR (end) $

New MRR $

Expansion MRR $

Contraction MRR $

Churned MRR $

Period (months)

Churn summaryCritical (>10%)

Customer churn rate10.00%

Net customer churn rate5.00%

Revenue churn rate (gross)9.00%

Net revenue churn rate2.00%

Lost customers10

Monthly net MRR impact-$200 / month

Monthly new MRR$500

Monthly expansion MRR$200

Monthly contraction MRR$100

Monthly churned MRR$800

About Churn Rate Calculator

Calculate customer and revenue churn with cohort analysis and MRR impact. 100% private. 100% private. Everything runs locally in your browser — your data never leaves your device.

How to use

Enter your input in the tool above.
Adjust any options to your preference.
Use the Copy or Download buttons to save the result.
Everything happens locally — your data never leaves your browser.

FAQ

Is this tool private?

Yes. All processing happens locally in your browser. No data is uploaded.

What extras does this tool have?

Extras: (1) Core function, (2) Batch mode, (3) Copy results, (4) Download, (5) History, (6) CSV export, (7) Custom options, (8) Validation, (9) Warnings, (10) Stats, (11) Multi-format, (12) Configurable, (13) Preview.