CPM Calculator
Last updated: October 15, 2026
Calculate advertising cost per one thousand impressions.
Cost per thousand impressions
—
- Impressions: —
- Cost per impression: —
- Cost per 1 million impressions: —
On this page
Quick summary: Calculate advertising cost per one thousand impressions.
Read the complete guide
Updated reference sections in this guide are in English.
What this calculator estimates
Calculate advertising cost per one thousand impressions.
How to use it
Enter Advertising spend ($); Impressions. Select Calculate to update the results.
How the calculation works
Cost per thousand impressions (CPM) = advertising spend / impressions × 1,000. Cost per impression divides spend by impressions. The million-impression illustration multiplies CPM by 1,000.
Worked example: starting scenario
| Advertising spend ($) | 5000 |
|---|---|
| Impressions | 750000 |
| Cost per thousand impressions | $6.67 |
|---|---|
| Impressions | 750,000 |
| Cost per impression | $0.01 |
| Cost per 1 million impressions | $6,666.67 |
Important limitations
Impressions must be positive and spend must be nonnegative. Use matching spend and impression reporting periods. A constant CPM projection does not model auction changes, viewability, click-through rates, conversions or profit. Small per-impression amounts can round to zero at currency display precision.