# What does CPM mean on YouTube?

Canonical: https://postmesh.app/glossary/cpm

By PostMesh team. Published 2026-10-31; updated 2026-10-31.

CPM stands for Cost per mille. CPM stands for cost per mille, the price an advertiser pays for 1,000 ad impressions. On YouTube, the CPM in a creator's analytics is what advertisers paid per 1,000 ad impressions on their videos, before YouTube's share, so it's always higher than what the creator earns.

## What CPM means

CPM is short for cost per mille, and mille means thousand. It's the price of showing an ad 1,000 times. If an advertiser spends $50 and its ad is shown 10,000 times, the CPM is $5. That's the example Meta uses in its own [help page on CPM](https://www.facebook.com/business/help/753932008002620), which defines it as what an advertiser pays, on average, for each thousand impressions.

It means the same thing whether you're buying ads or earning from them. The difference is which side you're on. An advertiser looks at CPM to see how much reach costs. A YouTube creator sees CPM in their analytics as a measure of what advertisers paid to show ads on their videos. Neither is what the creator takes home; that number is [RPM](/glossary/rpm).

1. Take the amount spent on ads
2. Divide it by the number of impressions
3. Multiply by 1,000

*$50 ÷ 10,000 impressions × 1,000 = $5 CPM, Meta's example.*

## Where the term comes from

Merriam-Webster lists CPM as an abbreviation for cost per thousand and traces it to the Latin mille, thousand. The related phrase per mill, meaning per thousand, has a first known use of 1682 in the same dictionary. That's why the M stands for a thousand rather than million, which trips up a lot of people the first time they see it.

In advertising, CPM puts very different ad buys on one scale, so a billboard, a magazine page and a feed ad can be compared by the cost of reaching a thousand impressions. Meta's help page describes CPM as a common metric in online advertising for judging how cost-effective a campaign is and comparing publishers and campaigns.

## CPM on YouTube

YouTube's [help page on ad revenue analytics](https://support.google.com/youtube/answer/9314357) defines two CPMs for creators in the YouTube Partner Program:

- CPM: the cost advertisers pay for every 1,000 ad impressions on your videos, before YouTube takes its share.
- Playback-based CPM: the cost advertisers pay for 1,000 video playbacks where an ad was shown. YouTube says it's often higher than CPM because one playback can include more than one ad.

Both only count monetized views, the ones where an ad actually ran. A view where no ad was shown doesn't appear in your CPM at all. That's the main reason CPM can look healthy while your earnings per view look low.

**CPM**
- What advertisers pay per 1,000 ad impressions
- Before YouTube's revenue share
- Only views where an ad was shown
- Ad revenue only

**RPM**
- What you earn per 1,000 views
- After YouTube's revenue share
- All views, with or without ads
- Ads, Premium, memberships, Super Chat and Super Stickers

*From YouTube Help: Understand ad revenue analytics.*

## Why your CPM is higher than your RPM

YouTube gives two reasons. CPM is calculated before YouTube's revenue share, and RPM after it. And CPM only includes monetized views, while RPM for long-form videos includes all views, monetized or not. For Shorts, YouTube calculates RPM per 1,000 engaged views.

The revenue share itself is set out in YouTube's [partner earnings overview](https://support.google.com/youtube/answer/72902). Creators who've accepted the relevant modules get 55% of net ad revenue on long-form videos and 45% of the revenue allocated to them from the Shorts creator pool. The same page is clear that the partner agreement guarantees nothing about how much, or whether, a creator will be paid.

Put those together and a video with a $10 CPM doesn't earn $10 per 1,000 views. YouTube keeps its share, and views that didn't show an ad bring the per-view figure down further. To estimate earnings, work from your RPM instead; the [YouTube money calculator](/tools/youtube-money-calculator) uses your own RPM for exactly that reason, and [how much YouTube pays per 1,000 views](/blog/how-much-does-youtube-pay-per-1000-views) goes through the full picture.

### A worked example

These numbers are made up to show the arithmetic, not typical rates. Say a long-form video gets 100,000 views, and ads run on 40,000 of them with one ad each. Advertisers pay a $10 CPM on those 40,000 ad impressions, which is $400 in ad spend. At a 55% share, the creator's part of that is $220. Spread over all 100,000 views, the ad part of RPM is $2.20, against a CPM of $10.

Real RPM also includes YouTube Premium, memberships, Super Chat and Super Stickers, which can lift it, and net revenue is calculated after deductions the partner agreement describes. The point of the example is the shape, not the figures: CPM describes the ads that ran, and RPM describes every view you got. Change the share of views with ads and the gap between the two changes with it.

## What moves CPM

YouTube's help page lists three things that change the CPM advertisers pay on your videos:

- Time of year. Advertisers bid more at some times than others; YouTube points to the run-up to holidays as a period when bids tend to rise.
- Where your viewers are. Ad markets in different countries have different levels of competition, so a change in where your audience lives can shift your CPM.
- Ad formats. Different ad types have different CPMs. YouTube gives the example that having more non-skippable ads available can raise it.

On the advertiser side, the settings you choose shape what you pay. Meta's help page on reach says your bid, budget and audience targeting all affect how many people your ads reach, and since CPM is spend divided by impressions, the same settings move your CPM.

**Before you compare two CPMs**
- [ ] Same side: advertiser cost, not creator earnings
- [ ] Same type: CPM or playback-based CPM
- [ ] Same period, ideally including the same holidays
- [ ] Similar audience countries
- [ ] Same network, since each counts impressions its own way

## CPM on Meta and other ad platforms

Every ad platform reports CPM the same way: spend divided by impressions, times 1,000. What differs is how each counts an impression. Meta counts one the first time an instance of an ad appears on screen, and doesn't require a video to start playing. It leaves out traffic it detects as invalid, such as bots, and says impressions from certain placements are accredited by the Media Rating Council.

Meta also lists a reach-based cousin next to CPM: cost per 1,000 Meta accounts reached. Because one account can see an ad several times, that figure is higher than CPM whenever frequency is above one. If you care about how many different people saw a campaign, it's the more honest of the two.

## How people use CPM on social media

Some illustrative examples of how the term comes up:

- "My CPM jumped in November, then crashed in January."
- "CPM is $12 but RPM is only $4. Where's the rest going?"
- "Our Meta CPMs doubled when we narrowed the audience."
- "Quoting a sponsor by CPM: $20 per 1,000 views on the integration."
- "Finance channels have high CPMs, but that doesn't mean high RPMs for every video."

Creators also borrow the term when pricing a [sponsored post](/glossary/sponsored-post): a rate per 1,000 expected views. That's a negotiation shorthand rather than a platform metric, so agree on how views will be counted before you sign.

In everyday creator talk, CPM is also used loosely to mean earnings per thousand views. That's RPM. If someone tells you their CPM is $3, ask whether they mean what advertisers paid or what they took home, because the two can be far apart. And if your channel isn't monetized yet, neither number exists for you; [when YouTube starts paying you](/blog/when-does-youtube-start-paying-you) covers the Partner Program thresholds.

## CPM vs CPC vs CPA

| Metric | Stands for | You pay or measure per |
| --- | --- | --- |
| CPM | Cost per mille | 1,000 impressions |
| CPC | Cost per click | One click |
| CPA | Cost per action or acquisition | One sign-up, sale or other goal |
| RPM | Revenue per mille | 1,000 views, from the creator's side |

A low CPM isn't automatically a good deal. If an ad is cheap to show but nobody taps it, every click ends up expensive. Look at CPM next to [click-through rate](/glossary/ctr): cost per click is roughly CPM divided by 1,000, divided by CTR. And because CPM is priced on impressions, not people, read it alongside the difference between [reach and impressions](/glossary/reach-vs-impressions).

## Questions

### What does CPM stand for?

Cost per mille, Latin for thousand. It's the cost of 1,000 ad impressions. It doesn't mean cost per million.

### Is CPM what YouTube pays me?

No. CPM is what advertisers pay per 1,000 ad impressions before YouTube's share. What you earn per 1,000 views is your RPM.

### What is playback-based CPM?

What advertisers pay for 1,000 playbacks where at least one ad was shown. It's often higher than CPM because a playback can include several ads.

### Why does my YouTube CPM drop in January?

YouTube says advertisers often bid more in the run-up to holidays and less at other times, so CPM can fall once the holiday season is over.

### What is a good CPM?

There's no single figure. It depends on the network, the audience's country, the season, the ad format and your targeting. Compare against your own past campaigns or videos.

### How do I calculate CPM?

Divide the amount spent by impressions and multiply by 1,000. $30 spent for 12,000 impressions is a $2.50 CPM.

## Related terms

- [RPM](https://postmesh.app/glossary/rpm)

- [CTR](https://postmesh.app/glossary/ctr)

- [Reach vs impressions](https://postmesh.app/glossary/reach-vs-impressions)

- [Sponsored post](https://postmesh.app/glossary/sponsored-post)

- [Engagement rate](https://postmesh.app/glossary/engagement-rate)

## Sources

- [YouTube Help: Understand ad revenue analytics](https://support.google.com/youtube/answer/9314357)

- [YouTube Help: YouTube partner earnings overview](https://support.google.com/youtube/answer/72902)

- [Meta Business Help Centre: CPM (cost per 1,000 impressions)](https://www.facebook.com/business/help/753932008002620)

- [Meta Business Help Centre: Impressions](https://www.facebook.com/business/help/675615482516035)

- [Meta Business Help Centre: About reach metrics](https://www.facebook.com/business/help/710746785663278)

- [Merriam-Webster: CPM](https://www.merriam-webster.com/dictionary/CPM)

- [Merriam-Webster: per mill](https://www.merriam-webster.com/dictionary/per%20mill)