> For the complete documentation index, see [llms.txt](https://docs.marketingtool.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.marketingtool.pro/meta-custom-audiences-builder.md).

# Meta Custom Audiences Builder

Build high-converting Facebook Custom Audiences from website visitors, customer lists, app users, and engagement data. Create layered audience segments for precise retargeting across Meta platforms.

**Category:** [Facebook & Meta Ads](/facebook-and-meta-ads.md) · **Badge:** Facebook/Meta

## Where to find it

* **Web app** — [app.marketingtool.pro/tools/meta-custom-audiences](https://app.marketingtool.pro/tools/meta-custom-audiences)
* **iOS / Android app** — open the **Tools** tab and search “Meta Custom Audiences Builder”

## Inputs

| Input           | Type                                                                                                                            | Required |
| --------------- | ------------------------------------------------------------------------------------------------------------------------------- | -------- |
| Audience Source | select — Website Visitors, Customer List (Email/Phone), App Activity, Video Viewers, Page/Profile Engagement, Lead Form Openers | ✅        |
| Time Window     | select — Last 7 days, Last 14 days, Last 30 days, Last 60 days, Last 90 days, Last 180 days                                     | optional |
| Audience Name   | text                                                                                                                            | optional |

## Tips for best results

* **Layer audiences** — Combine website visitors + email lists + engagement data for ultra-precise retargeting segments.
* **Exclude purchasers** — Always exclude recent buyers from prospecting campaigns to avoid wasting budget on converted users.
* **Use time windows** — Create audiences based on recency — 7-day visitors convert better than 180-day visitors.

## How to run it

1. Open **Meta Custom Audiences Builder** (links above).
2. Fill in the inputs and press **Generate**.
3. Review your full result page — it's saved to your History automatically. On desktop, use **Download All** to save every asset.


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