Conversion Probability Calculator

Want to know how much traffic or budget you need to have a good chance of getting a conversion? This calculator estimates the minimum number of visits (or clicks) and total ad spend needed to reach your desired probability of at least one conversion — based on your average conversion rate and cost-per-click (CPC).

• Conversion rate (%): The percentage of visitors who convert (e.g. fill out a form, make a purchase) — usually your landing page or campaign's average conversion rate.
• Desired probability (%): How likely you want it to be that at least one conversion happens (e.g. 90% = "I want a 90% chance of a conversion").
• Average CPC ($): Your average cost per click (or per visit) from ads.

You'll get: The minimum traffic and cost required to reach your goal for your provided numbers, calculated using geometric distribution. See how it works here.