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Subscription churn calculator

Calculate your subscription churn rate and the MRR lost per month to churn.

Your inputs

Results

Monthly churn rate
4.00%
$1,160 MRR lost · 38.7% annualized
MRR lost/mo
$1,160
Annual churn
38.7%
Under 2% monthly churn is world-class SaaS. 5%+ monthly compounds to 46% annualized — you're refilling a leaky bucket. Fix onboarding and first 30-day activation first.

How to use this calculator

Fill in your own numbers in each field. Results update live. The chart shows how each component of the calculation contributes to the final answer so you can see what's driving it.

What this doesn't include

Edge cases — currency conversion, regional duties, weight-based shipping exceptions — can move real-world numbers 5–15%. Use this as a planning baseline, not a final quote. Always confirm fees in your platform's seller dashboard.

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Frequently asked questions

How accurate is the subscription churn calculator?

The math is exact; the answer depends on the inputs you provide. Check it against your latest platform reports before making budget decisions.

Is my data stored anywhere?

No. All computation runs in your browser — nothing you type leaves your device. Only anonymous pageview stats are collected.

Can I save or share my result?

Yes — use the Download as PDF button on the calculator card to save or share a clean copy.

Are these fees current?

Default values reflect published fee schedules as of 2026. Platforms change fees — always verify against your current rate card.

Where does the math come from?

From published platform fee schedules, public ecom benchmark reports, and our own merchant data. We update defaults when platforms shift pricing.

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