Email Campaign ROI Calculator
Calculate the exact return on investment for an email marketing campaign by projecting revenue from your funnel rates and comparing it to campaign cost. Essential for justifying email spend and forecasting before a send.
About this calculator
Email ROI measures how many dollars of profit you earn for every dollar invested in a campaign. The formula is: ROI (%) = (((emailsSent × (openRate/100) × (clickRate/100) × (conversionRate/100) × avgOrderValue) − campaignCost) / campaignCost) × 100. Each multiplied rate narrows the audience through the funnel: emails sent → opens → clicks → conversions. The product of all three rates applied to emailsSent gives the projected number of purchases. Multiplying by average order value yields projected gross revenue. Subtracting campaignCost gives net profit, which is then divided by campaignCost and scaled to a percentage. An ROI above 100% means you more than doubled your investment; industry benchmarks commonly cite 3,600–4,200% for well-run email programs, though realistic campaign-level ROI is often 200–800%.
How to use
Campaign cost: $500. Emails sent: 20,000. Open rate: 25%. Click rate: 10%. Conversion rate: 5%. Average order value: $80. Step 1: Projected conversions = 20,000 × 0.25 × 0.10 × 0.05 = 25. Step 2: Projected revenue = 25 × $80 = $2,000. Step 3: Net profit = $2,000 − $500 = $1,500. Step 4: ROI = ($1,500 / $500) × 100 = 300%. Enter these six values and the calculator returns 300% instantly.
Frequently asked questions
What is a realistic ROI expectation for a small business email campaign?
Small businesses with clean, permission-based lists and relevant offers regularly achieve ROI of 200–500% per campaign, meaning every $1 spent returns $3–$6. The DMA and Litmus both report industry-wide averages of around $36–$42 returned per $1 spent on email, but those figures reflect mature programs with large lists. For a single campaign, 200% ROI (tripling your investment) is a solid target if you are still building your list and testing messaging. Focus on improving your weakest funnel metric — usually click rate or conversion rate — for the fastest ROI gains.
How does average order value affect email campaign ROI calculations?
Average order value (AOV) is a direct multiplier of projected revenue — doubling your AOV doubles your ROI without changing a single campaign metric. This makes AOV optimisation (through upsells, bundles, or free-shipping thresholds) one of the highest-leverage levers available. For example, raising AOV from $40 to $60 on a campaign with 100 projected conversions adds $2,000 in revenue at zero additional ad cost. When you run this calculator, try varying AOV to see how even small increases ripple into ROI, then test order-bump offers in your email or on the checkout page.
Why is campaign cost so important to include when calculating email ROI?
Omitting campaign cost produces a revenue figure, not a return — and revenue without cost context is meaningless for decision-making. Campaign cost should include platform fees, copywriting and design, list acquisition or maintenance, and any promotional discounts offered exclusively to email subscribers. When these are included, ROI calculations correctly identify whether email outperforms other channels on a like-for-like basis. A campaign generating $10,000 in revenue looks very different with a $500 cost (ROI 1,900%) versus a $4,000 cost (ROI 150%), and only the full cost picture lets you optimise budget allocation accurately.