Email Marketing ROI Calculator
Calculate email campaign ROI, ROAS, and revenue per subscriber — compared against industry benchmarks.
How this is calculated
Starting from your list size, this calculator applies your open rate to estimate opens, then your click-through rate to estimate clicks, then your conversion rate to estimate purchases. Revenue is conversions times average order value, and ROI/ROAS compare that revenue against your campaign cost. Open and click-through rates are shown against 2024 DMA/Mailchimp industry benchmarks.
Frequently asked questions
- What open rate should I expect?
- The 2024 industry average is around 21.5% (DMA/Mailchimp), though it varies significantly by industry, list quality, and subject line. A well-maintained, engaged list often exceeds this.
- What click-through rate is good?
- The industry average click-through rate is around 2.9%. Anything meaningfully above that suggests strong subject lines, relevant content, and a clear call to action.
- How is ROI calculated?
- ROI = (revenue − campaign cost) / campaign cost × 100, expressed as a percentage. ROAS (revenue / cost) is a related but distinct metric that does not subtract the cost first.
- How do I improve my conversion rate?
- Segment your list so content is relevant to each recipient, streamline the path from email to purchase, use clear and specific calls to action, and test subject lines and send times to improve opens and clicks upstream of conversion.
- Can I use this in my own app?
- Yes — every calculator on Stupidly Clever has a matching REST API and MCP tool that runs the same underlying logic.