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  • Sign in to Meta Ads Manager and open any campaigns table.
  • Click Columns → Customize columns.
  • Under Custom Conversions, add NC Purchase (Total + Cost).
  • Click Create custom metric and define NC-ROAS = NC Purchase Conversion Value ÷ Amount spent.
  • Click Apply to save the column layout.

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Prerequisites

Before you start, you need:

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What you’ll achieve

After completing this setup, you’ll see new-customer metrics — NC-ROAS (New Customer Return on Ad Spend), Cost per NC Purchase, and Total NC Purchases — directly in Meta Ads Manager.

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Part 1 — Add NC Purchase metrics to columns

1

Open Customize columns in Meta Ads Manager

Sign in to Meta Ads Manager at adsmanager.facebook.com, select the ad account you want to configure, then on the campaigns/ad sets/ads table click Columns in the toolbar above the table and select Customize columns.
2

Add the NC Purchase metrics

In the Customize columns dialog, scroll the left-hand category list to Custom Conversions and select your NC Purchase conversion (it may be named NewCustomerPurchase depending on how you created it).Check both checkboxes that appear:
  • Total — total number of new-customer purchases attributed
  • Cost — cost per new-customer purchase

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Part 2 — Set up the NC-ROAS custom metric

1

Open Create custom metric

Inside the Customize columns dialog, click Create custom metric in the bottom-left.
2

Configure the NC-ROAS formula

Fill in the new-metric form:
  • Name: NC-ROAS
  • Formula: NC Purchase Conversion Value ÷ Amount spent
  • Click Create metric
Check Everyone with access to this Business if you want the metric to be available to your whole team.
3

Add NC-ROAS to your columns and apply

Back in Customize columns, find NC-ROAS under Custom metrics and check it so it appears in your table.Click Apply in the bottom-right of the dialog to save the column layout.
4

Verify the new columns appear

Your Ads Manager table should now show three new columns:
  • NC Purchase (Total) — number of new customers acquired
  • NC Purchase (Cost) — cost per new customer
  • NC-ROAS — return on ad spend from new customers
Initially, the new columns may show 0 or — because Meta does not retroactively attribute custom conversions from before they were created. Data populates for conversions that occur after the conversion was created and shared. Allow 24–48 hours of new traffic before judging the values.