Meta Ads
Audiences
What's the difference between 1% and 10% Lookalikes?
1% is the most similar to your source (~2-3M US users); 10% is the broadest (~25M). Higher % trades accuracy for reach. Start with 1-3% and expand if you're audience-capped.
Go deeper
Want the full playbook? Read Beginner’s Playbook for Google Ads Audiences — Keywords matter, but they’re only part of the picture. This guide explains the 8 main Google Ads audience types, when to use them, and how to launch them without cluttering your account.