> ## Documentation Index
> Fetch the complete documentation index at: https://help.stiddle.com/llms.txt
> Use this file to discover all available pages before exploring further.

# What are blended metrics?

> Understand how Stiddle blends metrics across channels to provide unified KPI views.

Blended metrics combine data from multiple sources into a single calculation, letting you track cross-channel performance without exporting to a spreadsheet.

## How blending works

1. Stiddle normalizes each platform’s metric (naming, currency, time zone).
2. Metrics are summed or averaged, depending on the KPI (e.g., Spend is summed, CTR is weighted).
3. The result is stored as a blended metric you can add to any widget.

## Common blended metrics

* **Blended Spend** – Sum of all connected ad channels.
* **Blended ROAS** – `Total Revenue ÷ Total Spend` across those channels.
* **Blended CPA** – `Total Spend ÷ Total Conversions`.
* **Blended CPM** – Weighted by impressions so large channels influence the rate appropriately.

## Why use blended metrics?

* Quickly see how your entire media mix is performing.
* Benchmark brand vs. performance efforts without creating multiple dashboards.
* Share one number with executives instead of separate platform-specific metrics.

If you need a custom blend (e.g., only paid social), you can access one by using the metric configurator.