What Is Frequency? — Free Tool
Frequency is impressions divided by reach: how many times the average person saw your ad. Where the useful range sits, what creative fatigue looks like in the data, and how to fix it.
The average number of times each person in your reach saw the ad, calculated as impressions divided by reach. It is the dial between being remembered and being resented.
What it is
Frequency is how many times the average person in your reach saw the ad. It is the dial between being remembered and being resented, and it moves whenever budget rises faster than the audience it is spread across.
How it is measured
Impressions divided by reach. Ninety thousand impressions across thirty thousand people is a frequency of 3. Note the period matters: frequency over a week and frequency over a quarter are different numbers from the same campaign, so always state the window.
Commonly misunderstood
Average frequency hides the distribution, which is where the damage lives. A campaign averaging 3 might have shown the ad once to most of the audience and twenty times to a small unlucky segment, and that segment is the one filing complaints. Meta's frequency distribution breakdown is the fix. The second misunderstanding is treating rising frequency as the disease when it is the symptom: it climbs because the audience is too small for the budget, so widening the target or adding creative variants solves it while a frequency cap alone just throttles delivery. Watch for the fatigue signature of frequency up, CTR down, CPM up together.
When it matters
Check frequency before you increase budget on a running campaign. If it is already above three on cold traffic, more money buys repetition rather than new people.
Related terms
Features
- The frequency formula written out, with a worked example
- Where the useful range sits for prospecting versus retargeting
- How creative fatigue shows up: CTR falling while CPM rises
- Why frequency caps behave differently per platform and campaign objective
- A linked calculator so you can model impressions, reach and cost together
Frequently asked questions
What is the frequency formula?
Impressions divided by reach. Ninety thousand impressions against thirty thousand reach is a frequency of 3, meaning the average person saw the ad three times.
What frequency should I aim for?
For cold prospecting, roughly 1.5 to 3 over a campaign flight is a common working range. Retargeting tolerates more, often 4 to 8, because the audience already knows you. Above those levels, extra impressions mostly buy irritation.
How do I know creative is fatiguing?
The signature is frequency rising, CTR falling and CPM drifting up at the same time, because the platform is paying more to reach the same people who now respond less. Refresh creative rather than raising budget.
Is average frequency enough to look at?
No. It hides the distribution. A frequency of 3 can mean everyone saw it three times, or that most saw it once and a small group saw it twenty times. Meta's frequency distribution breakdown shows which.
Should I set a frequency cap?
On reach and awareness objectives, yes, a cap is usually available and worth setting. On conversion objectives the platform optimises delivery itself and a tight cap can starve the campaign, so cap loosely if at all.
