Conversion rate is the percentage of people who complete a desired action out of everyone who had the opportunity to complete it. In commerce and subscriptions, that usually means finishing checkout, starting a paid plan, or converting from a free trial.
Conversion rate can be measured at almost any step of a customer's journey: visits that turn into signups, trials that turn into paid subscriptions, or checkout sessions that turn into completed purchases. Because it is a ratio rather than a raw count, it lets a business compare performance across time periods, channels, or configurations even when overall traffic changes. For subscription and commerce businesses, conversion rate at checkout is especially sensitive to friction: how many fields a customer has to fill in, whether their preferred payment method is available, and how long the process takes from start to finish.
Why it matters
Conversion rate connects directly to revenue without requiring any change in traffic or acquisition spend. Improving conversion at checkout means more of the customers a business already attracted actually complete a purchase, which makes it one of the more efficient levers available for growth. It also tends to expose specific, fixable problems, since a drop in conversion for one payment method or one checkout configuration usually points to a concrete cause rather than a vague trend.
Recurly's Checkout analytics dashboard reports conversion across checkout configurations, so merchants can compare how different configurations perform against each other rather than relying on a single aggregate figure.
How to calculate conversion rate
Conversion rate is the share of opportunities that end in the action you care about, written as a percentage:
Conversion rate = (completed actions / total opportunities) x 100
To calculate it:
Choose the action that counts as a conversion, such as a completed checkout.
Count how many people completed that action during the period.
Count how many people had the opportunity to complete it in the same period.
Divide completions by opportunities and multiply by 100.
For example, if 320 of 4,000 checkout sessions end in a completed purchase, the conversion rate is (320 / 4,000) x 100 = 8%.
How to use conversion rate
A subscription or commerce business generally works with conversion rate in a few steps:
Decide which step of the funnel you are measuring, since "conversion rate" means something different at signup, trial, and checkout.
Break the rate down by segment, such as payment method or checkout configuration, rather than looking only at a single blended number.
Compare segments against each other to find where customers are dropping off disproportionately.
Test changes to the highest-friction step and watch whether the rate moves as expected before rolling a change out further.
Benefits and examples
Segmenting conversion rate often reveals more than a single overall number can. A business might see a healthy overall checkout conversion rate but discover that one payment method has a much lower rate than the others, either because customers rarely choose it or because it fails at a higher rate once chosen. Separating those two possibilities, whether a method is chosen less often or approved less often, points to two very different fixes.
Recurly's payment method conversion view makes that split visible with two metrics: checkout rate, which shows how often customers choose a given payment method when it is presented to them, and auth rate, which shows how often that payment method actually succeeds once chosen.
The dashboard also tracks average order size and time to checkout alongside conversion, since a configuration that converts well but shrinks order size, or one that converts well but takes much longer to complete, may not be the best outcome for the business. Looking at conversion together with these other metrics gives a fuller picture than conversion rate alone.
Frequently asked questions
Is conversion rate the same thing at every stage of the funnel? No. It is the same underlying concept, a percentage of people completing an action, but the specific stage matters. Signup conversion, trial-to-paid conversion, and checkout conversion each have different typical causes of drop-off and different fixes.
Why would conversion rate differ by payment method? Two different things can drive this: how often customers choose a given method when they see it, and how often that method's transactions actually succeed once chosen. A method can be popular but have a lower approval rate, or reliable but rarely selected, and each situation calls for a different response.
What's a good conversion rate for subscription checkout? This varies by industry, price point, and audience, so there is no single universal benchmark.
How does average order size relate to conversion rate? They are related but not the same. A checkout configuration that maximizes conversion is not automatically the one that maximizes revenue, since it might do so by attracting smaller average orders. It is worth reviewing both metrics together rather than optimizing for conversion alone.
