Email Unsubscribe Rate Calculator
Estimate the unsubscribe rate using unsubscribes and delivered messages from the same campaign or reporting period.
How to use this calculator
- Enter unsubscribes and delivered-message count for the same campaign.
- Check that all inputs use the same units, time period and population scope.
- Change one assumption at a time when comparing scenarios.
Formula used by unsubscribe rate calculator calculator
Unsubscribe rate = unsubscribes ÷ delivered messages × 100%.
- Unsubscribe rate = unsubscribes ÷ delivered messages × 100%.
- Email platforms may define the denominator differently; use the same metric definition over time and comply with applicable unsubscribe requirements.
- The tool validates entered values and formats results for readability; it does not verify assumptions against external records.
Worked examples
Worked example
42 unsubscribes from 12,000 delivered messages.
42 ÷ 12,000 × 100 = 0.35%.
Unsubscribe rate is 0.35% on the entered denominator.
Understanding the result
Estimate the unsubscribe rate using unsubscribes and delivered messages from the same campaign or reporting period.
Email platforms may define the denominator differently; use the same metric definition over time and comply with applicable unsubscribe requirements.
Important notes
Email platforms may define the denominator differently; use the same metric definition over time and comply with applicable unsubscribe requirements.
Treat the result as an estimate based on the entered inputs. For regulated, engineering, employment, tax or business decisions, check applicable official rules, specifications and professional guidance.
Frequently asked questions
Is a low unsubscribe rate always positive?
Not necessarily; delivery, audience quality, engagement and complaint rate should be considered together.
Can unsubscribe rate be above 100%?
Not under this count definition; the calculator rejects unsubscribes greater than delivered messages.
How should I use the result?
Email platforms may define the denominator differently; use the same metric definition over time and comply with applicable unsubscribe requirements.
Affiliate recommendations
Tools related to Email Unsubscribe Rate Calculator
These tools are selected for the calculator topic. The Calc Studio may earn a commission from purchases made through affiliate links.
- Ultra Web Hosting Visit partner ↗
Web hosting and website infrastructure for websites and online businesses.
See the Affiliate Disclosure for details.
Related calculators
- Email Campaign Performance Calculator — Calculate email delivery, unique open, click-through, click-to-open, conversion and unsubscribe rates from supplied campaign counts.
- Email Deliverability Rate Calculator — Calculate the percentage of sent email messages reported as delivered, based on compatible campaign counts.
- Email List Growth Calculator — Calculate active subscriber growth, net additions and an unsubscribe-rate estimate over a reporting period.
- Event Attendance Rate Calculator — Calculate attendance rate and no-show count using registrations and recorded attendees from one event or event series.
- Conversion Rate Calculator — Calculate a website, campaign, or funnel conversion rate from visits and completed actions.
- Creator Effective Hourly Rate Calculator — Estimate a creator project’s net effective hourly rate after direct costs and all production and administration hours.
Related explanations
Learn the method behind the number or compare the terminology before using the calculator.
- How to Calculate Salary from an Hourly Rate — Convert hourly pay into weekly, monthly, and annual estimates and understand the assumptions behind the result.
- Simple Interest Formula and Examples — Learn the simple interest formula, how to solve for principal, rate, time, and final amount.
- Basal Metabolic Rate (BMR) — Learn what basal metabolic rate means and how BMR estimates are used in calorie planning.
This page provides a calculation tool plus explanatory information so you can understand what the result means and when the underlying method may not fit your situation.