Incremental Conversions, as a Summary Metric, are the additional conversions gained from the variants when compared to those from the control groups.
Formula: Unique Conversions x (ΣIncr. conversions / ΣVar (conversions))
Below is a sample calculation of Incremental Conversions.
Unique Conversions
Sum of Incremental Conversions
Sum of Variant's ConversionsIn the examples above, you can see the unique conversions, the sum of incremental conversions, and the sum of variant's conversions. When you place them in the formula, it gives out the Incremental Conversions displayed in the table below.
Incremental Conversions = Unique Conversions x (ΣIncr. conversions / ΣVar (conversions))
Incremental Conversions = 6.541 x (2.401 / 6.851)
Incremental Conversions = 2.292,35
You can see this metric as follows on your dashboard.

Unique Conversions is the total number of successful unique goal accomplishments.