You open your ads manager and see two numbers side by side, impressions and reach, and they are not the same. Impressions is the total number of times your ad was put on a screen. Reach is how many separate people it was put in front of. If one person scrolls past your ad five times, that is five impressions but one reach, because it counted five showings but only one human being.
The two numbers move together but they tell you different things, and the gap between them is the interesting part. Say your ad got 50,000 impressions and reached 10,000 people. Divide the impressions by the reach and you get 5. That number is your frequency, and it means the average person in that audience saw your ad five times. Reach tells you how many people you found. Frequency tells you how hard you leaned on each one.
Take your own campaign and do the same thing. Pull your impressions, pull your reach, and divide the first by the second. The calculator below does it for you so you can see the number your dashboard does not print for you directly.
Watching impressions on their own is where money quietly leaks, because a big impression count can hide the fact that you are showing the same small group of people the ad again and again. When you look at reach and frequency together, you can finally tell whether you are finding new people or just repeating yourself to the same faces until they are sick of you. That repetition has a name, ad fatigue, and it usually shows up as your frequency climbing while your results flatten out.
Here is the honest catch: a little repetition is how people remember you, but too much is how you annoy them, and there is no single frequency number that is correct for every account, product or audience. A cold audience seeing you for the first time behaves nothing like a warm one that already knows your name, so do not chase a target someone quoted you. Watch your own frequency over time and pay attention to what happens to your results as it rises.
Reach is who you found, frequency is how often you knocked, and you want to know both before you spend another rupee.
Sources
- Standard advertising definition. This page explains a universal metric, not a Meta-specific figure, so there is no benchmark or platform number to source. Any example numbers are illustrative and labeled as made up.
Last checked 9th August 2026. Next check 15th August 2026.