Free advertising calculator
计算广告活动的每千次展示成本 (CPM)
Use this formula to calculate cost per mille:
Example: if a campaign costs $500 and delivers 100,000 impressions, CPM = ($500 / 100,000) × 1000 = $5.00.
You can also rearrange the formula: Cost = CPM × Impressions / 1000, and Impressions = Cost / CPM × 1000.
CPM means cost per mille, or cost per thousand impressions. It is a common pricing model for display ads, video ads, social media placements, programmatic campaigns, and brand awareness media.
Marketers use CPM to compare how efficiently different channels deliver reach. A lower CPM usually means cheaper exposure, while a higher CPM can be justified when the audience is more valuable or the placement has stronger performance.
| Model | You pay for | Best for |
|---|---|---|
| CPM | Every 1,000 impressions | Reach, awareness, and visibility |
| CPC | Each ad click | Traffic and engagement campaigns |
| CPA | Each conversion or action | Leads, purchases, and measurable outcomes |
