ConversionMath

Email Click-Through Rate Calculator

Calculate email click-through rate from delivered emails and unique clicks — the most reliable measure of email engagement in a post-privacy-change world.

Your Email CTR

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Formula Email CTR = (Unique Clicks ÷ Emails Delivered) × 100

How to use this calculator

Enter the number of emails delivered and the number of unique clicks. The calculator returns your click-through rate as a percentage. Use the "Calculate" selector to solve instead for required list size or expected clicks based on a target rate.

What is Email CTR?

Email click-through rate (CTR) is the percentage of delivered emails in which the recipient clicked at least one link. It's calculated as unique clicks divided by emails delivered, expressed as a percentage. Email CTR is widely considered the most reliable email performance metric because, unlike open rate, it requires a deliberate action that can't be faked by automated image pre-fetching. CTR reflects not just whether people opened the email, but whether the content inside convinced them to take the next step — making it the closest measure of real engagement.

When to use this calculator

  • Measuring true email engagement past open metrics
  • A/B testing email content, CTAs, and offers
  • Comparing campaign effectiveness across sends
  • Identifying which content types drive clicks
  • Reporting on email program performance
  • Setting performance targets for email campaigns

Frequently asked questions

What is a good email click-through rate?
Across industries, email CTRs typically average 2–3%. B2B newsletters and nurture sequences often see 3–5%. Transactional emails and highly segmented campaigns can reach 5–10%. Welcome emails, re-engagement campaigns, and cart abandonment sequences generally outperform broadcast sends. Compare against your own historical performance and industry benchmarks for your specific email type.

How is email CTR calculated?
Email CTR = (Unique Clicks ÷ Emails Delivered) × 100. If 125 out of 5,000 delivered emails had at least one click, your CTR is 2.50%.

Should I use unique clicks or total clicks?
Unique clicks — count each person once regardless of how many links they clicked. Total clicks inflates the number and isn't useful for comparing campaigns. Unique clicks is the standard metric used by email service providers.

Why is email CTR more reliable than open rate?
Because a click requires a deliberate human action. Opens can be triggered by image pre-fetching (Apple Mail Privacy Protection and similar systems), inflating open rates for no real engagement. Clicks can't be faked by these systems. Post-iOS 15, most email marketers weigh CTR and click-to-open rate more heavily than open rate when evaluating campaigns.

What's the difference between CTR and click-to-open rate?
CTR measures clicks relative to delivered emails. Click-to-open rate (CTOR) measures clicks relative to opens — so it isolates how compelling the email content was to the subset of people who actually opened it. CTR is the broader performance metric; CTOR is a useful quality metric for content and design.

How do I improve my email CTR?
Clearer CTAs with specific, action-oriented language ("Get the report" beats "Click here"), fewer competing links per email (one primary CTA performs better than many), stronger segmentation so the offer matches the recipient, mobile-optimized layouts, and compelling content. Personalization and relevance beat clever copy nearly every time.

Should I count clicks on unsubscribe or preference links?
No — standard CTR excludes clicks on administrative links like unsubscribe, preferences, and view-in-browser. These aren't engagement with your content. Most email platforms filter these out automatically.

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