---
title: Aggregate block
slug: analytics/docs/TncG-aggregate-block
docTags: 
createdAt: 2026-07-20T15:44:41.868Z
---

An aggregate block summarizes a property or block by applying an aggregation function to the input property and potentially organizing the results into groups.

Use the following fields to configure the block:

- **Aggregator** – Choose a function to aggregate input for a block.
  - **avg** – Compute the average of the input values.
  - **count** – Count the total number of input values, including duplicates.
  - **unique count** – Count the number of unique input values.
  - **first** – Compute the first input value, determined by ordering inputs by event time.
  - **last** – Compute the last input value, determined by ordering inputs by event time.
  - **max** – Compute the maximum input value.
  - **min** – Compute the minimum input value.
  - **sum** – Sum input values.
- **Input** – Provide input for the aggregator block. It can be a property, block, value, or parameter.
- **Group by** – (Optional) Group the output of the aggregator block by specified attributes. Each attribute can be a property or a block.

## Example

To calculate the number of user IDs,

1. Select **count** as the aggregator.
2. Select **id** from the Users dataset.
3. Click **Apply**.
4. Click **Run**.

![opti-aggr.png](https://api.archbee.com/api/optimize/BrbvVORKJ5iIeSMZye5kI/rXhmazzkzS29P-0nnz5jX-20260720-144922.png)

## Output

The aggregate block produces a numerical value. If you use the **Group by** option, the output may include a grouping attribute.

:::hint{type="info"}
**Note**

You can use the aggregate block to calculate the average revenue per user.

1. Click **+ > Metric > Aggregate**.
2. Calculate the total ad revenue per user in the first aggregate block. Select **sum** as the aggregator and the **Incremental Campaign Revenue** derived column as the value.
3. Click **+ > Users** in the **Group by Property** section. Name this block *Ad revenue per user*.
4. Add another aggregate block to calculate the *Average revenue per user*. Select **avg** as the aggregator and the previously created **Ad revenue per user** block as the value.
5. Click **Run**.

![oa-aggblock.png](https://api.archbee.com/api/optimize/BrbvVORKJ5iIeSMZye5kI/l1dYrREhXfZ8IGCiq_Opx-20260720-144922.png)
:::