Calculator Inputs
Example Data Table
| Campaign | Influencers | Avg Followers | Feed Posts | Story Frames | Reels | Overlap % | Estimated Impressions |
|---|---|---|---|---|---|---|---|
| Beauty Launch | 4 | 62000 | 6 | 18 | 4 | 15 | 1,346,210 |
| Fitness Challenge | 7 | 91000 | 10 | 30 | 8 | 22 | 4,285,940 |
| Travel Weekend Push | 3 | 150000 | 5 | 20 | 6 | 10 | 2,873,500 |
Formula Used
Gross Audience = Number of Influencers × Average Followers
Effective Audience = Gross Audience × (1 − Audience Overlap %)
Feed Impressions = Effective Audience × Feed Reach Rate × Feed Frequency × Feed Posts
Story Impressions = Effective Audience × Story Reach Rate × Story Frequency × Story Frames
Reel Impressions = Effective Audience × Reel Reach Rate × Reel Frequency × Reel Posts
Organic Impressions = Feed Impressions + Story Impressions + Reel Impressions
Final Impressions = Organic Impressions × (1 + Creative Lift) × (1 + Paid Boost) × (1 + Cross-Platform Lift)
Average Frequency = Final Impressions ÷ Estimated Unique Reach
This model estimates total exposure, not guaranteed platform-reported delivery. Real campaign performance can vary because of audience behavior, posting quality, timing, algorithm changes, and paid distribution settings.
How to Use This Calculator
- Enter the number of influencers and their average follower size.
- Fill in planned feed posts, story frames, and reels.
- Add reach rates for each content type using your historical averages.
- Enter frequency multipliers to reflect repeated views per reached user.
- Adjust audience overlap to avoid double-counting shared followers.
- Add creative, paid, and cross-platform lift percentages if applicable.
- Enter campaign spend to estimate CPM.
- Click the calculate button to view results, chart, and download options.
Frequently Asked Questions
1. What does this calculator estimate?
It estimates campaign impressions generated by influencer feed posts, story frames, and reels. It combines audience size, reach rates, viewing frequency, overlap, and lift assumptions.
2. Why is audience overlap important?
Overlap reduces inflated totals when creators share similar followers. Without it, the same people may be counted multiple times, causing overestimated audience and impression projections.
3. What is a frequency multiplier?
A frequency multiplier reflects how many times a reached user sees a content type on average. Stories often have higher repeat viewing than static feed posts.
4. Does this tool report actual platform analytics?
No. It provides a structured estimate for planning, forecasting, benchmarking, and proposals. Actual impressions should be verified later with creator reports and platform dashboards.
5. How should I choose reach rates?
Use historical averages from similar creators, formats, and audiences. Conservative assumptions usually make forecasts more credible and easier to compare after the campaign ends.
6. What do creative lift and paid boost mean?
Creative lift captures stronger content performance. Paid boost captures additional sponsored distribution. Both increase projected impressions beyond the organic baseline.
7. Why include cross-platform lift?
It lets you model added exposure from reposts, creator amplification, brand accounts, or extra channels beyond the core posting plan.
8. Can I use this for pricing and CPM planning?
Yes. Enter campaign spend to estimate CPM. That makes it easier to compare creator packages, benchmark media efficiency, and refine proposal assumptions.