Facebook Impression Calculator

1. Enter the unique reach for the

Enter the unique reach for the post, ad set, or campaign being analyzed.

2. Enter average frequency from the identical

Enter average frequency from the identical reporting scope, using at least 1.00.

3. Review estimated total impressions and displays

Review estimated total impressions and displays beyond the first exposure.

4. Treat small differences from Facebook reports

Treat small differences from Facebook reports as possible effects of rounded source metrics.

Estimated impressions = Unique reach × Average frequency
Estimated repeat displays = Estimated impressions − Unique reach

Frequency must be at least 1 because each reached person must account for at least one impression. The output may be fractional before display rounding.

What the result means

The primary result reports estimated impressions from the values entered above. Supporting rows show useful components or equivalent rates.

Use inputs from one consistent reporting scope. Platform definitions, attribution settings, rounding, and incomplete tracking can affect comparisons.

Given: Unique reach = 95,000 and average frequency = 2.8.

Calculation: Impressions = 95,000 × 2.8 = 266,000. Repeat displays = 266,000 − 95,000 = 171,000.

Result: Delivery is estimated at 266,000 impressions, including roughly 171,000 exposures beyond the first per reached person.