# CPM Calculator

CPM is what you pay per thousand ad impressions - the standard currency of awareness advertising. Enter your total cost and impressions to get your CPM and compare placements or platforms.

## How to use it

1. Enter your total cost.
2. Enter your total impressions.
3. Read your CPM.
4. Compare across campaigns or channels to find the most efficient reach.

## Frequently asked questions

### What is the CPM formula?

CPM = (total cost / impressions) x 1,000. $500 for 150,000 impressions is a CPM of about $3.33.

### What does CPM stand for?

Cost per mille - 'mille' is Latin for thousand. So CPM is the cost for every one thousand impressions of your ad.

### What is a good CPM?

It varies by platform, audience, and season. Display CPMs can be a few dollars; niche or competitive audiences on social run much higher. Compare like-for-like placements.

### When should I use CPM vs CPC?

CPM suits awareness and reach campaigns where impressions matter; CPC suits performance campaigns where you pay only for clicks. Match the metric to your goal.

### How can I lower my CPM?

Refine targeting, improve ad relevance and quality, test creatives, avoid over-competitive audiences, and pick less saturated placements or times.

Use the interactive tool: https://www.tryspook.com/tools/cpm-calculator