Click-to-Conversion Time (C2C)

Click-to-conversion time, also known as C2C, refers to the amount of time between a user’s first click on an online advertisement and the moment a conversion takes place.

In an ideal scenario, a visitor would convert immediately after clicking an ad. In reality, users often need more time to research, compare alternatives, or reconsider their decision before completing a purchase or action. As a result, conversions frequently occur hours, days, or even weeks after the initial click.

Why it matters

  • Helps advertisers understand the length of the customer decision process
  • Supports choosing the right conversion window in advertising platforms
  • Improves campaign evaluation and attribution analysis
  • Indicates how complex or high-value a purchase decision is

Generally, the bigger or more expensive the decision, the longer the average click-to-conversion time tends to be.