Conversion Rate Calculator

Calculate conversion rate, cost per conversion, and return on ad spend from your visitor and conversion numbers.

Conversion Rate--
Cost per Conversion--
Total Revenue--
Return on Ad Spend (ROAS)--
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Visitors → Conversions

How This Calculator Works

Conversion rate measures how effectively your traffic turns into desired actions — purchases, sign-ups, or leads. Combined with your ad spend and the revenue each conversion generates, you can see your cost per conversion and your return on ad spend (ROAS) at a glance.

Formula Used

Conversion Rate = (Conversions ÷ Visitors) × 100
Cost per Conversion = Ad Spend ÷ Conversions
Total Revenue = Conversions × Revenue per Conversion
ROAS = Total Revenue ÷ Ad Spend

How to Use It

Enter your total visitors or impressions, the number of conversions they produced, the average revenue each conversion is worth, and your total ad spend for the period. The calculator returns your conversion rate alongside cost and revenue metrics.

Worked Example

A campaign with 10,000 visitors, 250 conversions at $40 each, and $3,000 in ad spend has a 2.5% conversion rate, costs $12 per conversion, generates $10,000 in revenue, and returns a 3.33x ROAS.

Frequently Asked Questions

How is conversion rate calculated?

Conversion rate = (number of conversions divided by total visitors or sessions) x 100.

What counts as a "conversion"?

It depends on your goal — a completed purchase, form submission, sign-up, or any other target action you define for tracking purposes.

What's a good conversion rate?

It varies widely by industry and traffic source — e-commerce sites often see 1-4%, while dedicated landing pages for specific offers can be much higher.

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