CPM Calculator (Cost Per Mille)
Enter your total ad spend and the impressions delivered to find the cost per 1,000 impressions.
- Free
- No sign-up
Enter ad spend and impressions to see the CPM.
Worked example
With these example inputs:
- Total ad spend$500
- Impressions100,000
CPM (cost per 1,000): $5.00
- Per single unit$0.00
- Units bought with 10020,000
Frequently asked questions
How is CPM calculated?
Divide the total ad spend by impressions and multiply by 1,000. Spending $500 for 100,000 impressions gives a CPM of $5.
Why measure cost per 1,000?
CPM standardises ad costs so campaigns of different sizes can be compared. It is the common currency for buying awareness, where impressions matter more than immediate clicks.