GA4 Conversion Rate Calculator
Calculate User and Session Conversion Rates for your Google Analytics 4 data.
How to Calculate Conversion Rate in GA4
In Google Analytics 4 (GA4), the concept of conversion rate has evolved compared to Universal Analytics. GA4 tracks "Key Events" (formerly called conversions) and offers two distinct metrics to measure performance: User Conversion Rate and Session Conversion Rate.
1. User Conversion Rate Formula
The User Conversion Rate measures the percentage of users who triggered a key event. This is particularly useful for understanding how effectively your site converts unique individuals over time.
Formula: (Number of users who triggered a key event / Total number of users) x 100
2. Session Conversion Rate Formula
The Session Conversion Rate measures the percentage of sessions in which a key event was triggered. This is helpful for understanding the effectiveness of specific visits or marketing campaigns.
Formula: (Number of sessions in which a key event was triggered / Total number of sessions) x 100
Where to find these metrics in GA4?
By default, these metrics may not appear in your standard GA4 reports. To see them, you usually need to customize your reports:
- Go to Reports > Engagement > Events.
- Click the pencil icon (Customize report) in the top right.
- Click Metrics.
- Click Add metric and search for "User conversion rate" or "Session conversion rate".
- Apply the changes and save the report.
Example Calculation
Imagine your website had the following data for last month:
- Total Users: 10,000
- Total Sessions: 15,000
- Key Events (Purchases): 500
Using the formulas above:
- User Conversion Rate: (500 / 10,000) * 100 = 5%
- Session Conversion Rate: (500 / 15,000) * 100 = 3.33%