Newsletter Metrics Calculator

Calculate newsletter open rate, CTR, conversion rate, ROI, and subscriber growth.

Calculate the core newsletter metrics from one send: open rate, click-through rate, click-to-open rate, conversion rate, unsubscribe rate, bounce rate, ROI, and subscriber growth.

Advanced inputsrevenue, conversions, and subscriber growth

Revenue attributed to this send.

Campaign, tool, sponsorship, or content cost.

What this means

This issue has a strong open rate, strong click-through rate, and growing subscriber growth. The unsubscribe rate is healthy.

Delivery rate

Healthy

97.00%

Shows how many sent emails reached inboxes instead of bouncing.

Open rate

Strong

40.00%

Shows whether the topic, sender, and subject line earned attention.

CTR

Strong

5.00%

Shows how many delivered emails produced clicks.

Click-to-open rate

12.50%

Shows whether the email content matched the subject line promise.

Conversion rate from clicks

8.66%

Shows how many clickers completed the intended action.

Unsubscribe rate

Healthy

0.19%

Shows whether the issue caused readers to leave the list.

Bounce rate

Watch

3.00%

Shows list quality and deliverability pressure.

ROI

Profitable

700.00%

Shows whether attributed revenue exceeded campaign cost.

Revenue per delivered email

$0.25

Shows revenue density for each delivered email.

Net subscriber growth

335

Shows the subscriber count gained after losses.

Subscriber growth rate

Growing

2.79%

Shows how quickly the list grew from the starting base.

Ending subscribers

12,335

Shows the list size after new and lost subscribers.

What this tool does

The Newsletter Metrics Calculator combines the core performance numbers newsletter operators need: open rate, CTR, click-to-open rate, conversion rate, unsubscribe rate, bounce pressure, ROI, revenue per email, and subscriber growth. Use it to turn one issue into a clear performance readout.

How to use it

  1. Enter sent, delivered, opened, clicked, converted, and unsubscribed counts.
  2. Add revenue and campaign cost when ROI matters.
  3. Review engagement, conversion, list health, and revenue metrics together.
  4. Compare the result with prior issues and subscriber sources.

Newsletter metric formulas

  • Open rate = opens / delivered emails.
  • CTR = clicks / delivered emails.
  • Click-to-open rate = clicks / opens.
  • Conversion rate = conversions / clicks or delivered emails.
  • Unsubscribe rate = unsubscribes / delivered emails.

Newsletter metrics example

If 9,500 emails are delivered, 4,275 are opened, and 520 clicks happen, open rate is 45% and CTR is 5.47%.

If 26 subscribers convert from those clicks, the click conversion rate is 5%.

When to use this tool

  • Evaluate one newsletter issue.
  • Compare topics, send times, and CTAs.
  • Report sponsor performance.
  • Connect email engagement to list growth and revenue.

Related tools and guides

Subscriber Growth Rate CalculatorProject growth pace, target gaps, and monthly subscriber goals.Subscriber Retention CalculatorMeasure churn, retained subscribers, and replacement growth.Newsletter Referral CalculatorEstimate referral loops, k-factor, and reward costs.Email Marketing ROI CalculatorGo deeper on campaign revenue, profit, and break-even conversions.

Calculate newsletter and email performance

This newsletter metrics calculator helps you turn raw campaign numbers into useful rates. Add your sends, deliveries, opens, clicks, conversions, unsubscribes, bounces, revenue, costs, and subscriber changes to see the numbers that explain performance.

It is built for people who publish newsletters and want to understand which issues earn attention, clicks, subscribers, and revenue.

Newsletter metrics formulas

  • Open rate = opens / delivered emails
  • CTR = clicks / delivered emails
  • Click-to-open rate = clicks / opens
  • Conversion rate = conversions / clicks
  • Unsubscribe rate = unsubscribes / delivered emails
  • Bounce rate = bounces / emails sent
  • ROI = revenue minus cost, divided by cost

Why these metrics matter

Newsletter metrics are useful when they help you make better publishing decisions. Open rate can show whether the topic and subject line created enough interest. CTR shows whether the issue moved readers to act. Subscriber growth shows whether your overall publishing system is building an audience you can keep.

Related calculator tools

Newsletter Sponsorship CalculatorEmail Marketing ROI CalculatorSubscriber Retention CalculatorSubscriber Growth Rate CalculatorNewsletter Referral CalculatorLinkedIn Engagement Rate CalculatorSocial Media Engagement Rate CalculatorCreator Sponsorship Rate Calculator

FAQ

Common questions about email and newsletter metrics.

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