What is the Email Open Rate Calculator?
Calculate email open rate, click rate and click-to-open rate for a campaign. Digital marketing runs on unit economics. These calculators turn raw campaign numbers into the metrics that matter — what you pay per result, what each customer is worth and whether your ads are profitable.
How to use the Email Open Rate Calculator
- Enter your emails delivered, your unique opens, your unique clicks.
- Results update automatically as you type; you can also press Calculate.
- Read the output: open rate, click rate, click-to-open rate.
- Use the 📊 chart to see the result visually, then copy or share it.
Formula and method
Worked example
With emails delivered = 5,000, unique opens = 1,150, unique clicks = 140, the Email Open Rate Calculator returns open rate: 23.00%; click rate: 2.80%; click-to-open rate: 12.17%.
Tips for better results
- Track LTV:CAC — a ratio of 3:1 or higher is a common healthy benchmark.
- ROAS must exceed 1 ÷ margin to be profitable, not just exceed 1.
- Ad revenue varies widely by niche, country and season — use your own historical RPM when you have it.
⚠️ Revenue estimates depend on your traffic quality, niche and ad network policies; actual earnings will differ.
Frequently asked questions
What does the Email Open Rate Calculator do?
Calculate email open rate, click rate and click-to-open rate for a campaign.
How is it calculated?
The Email Open Rate Calculator uses this method: Open rate = Opens ÷ Delivered; CTOR = Clicks ÷ Opens.
Can you show an example?
With emails delivered = 5,000, unique opens = 1,150, unique clicks = 140, the Email Open Rate Calculator returns open rate: 23.00%; click rate: 2.80%; click-to-open rate: 12.17%.
Is the Email Open Rate Calculator accurate?
It uses standard published formulas and is tested against known values, but results are estimates for guidance. Revenue estimates depend on your traffic quality, niche and ad network policies; actual earnings will differ.
Is this tool free and private?
Yes — the Email Open Rate Calculator is completely free with no sign-up, and it runs entirely in your browser, so the values you enter are never uploaded to our servers.
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