What is CPM?
CPM is cost per mille, the price an advertiser pays for one thousand ad impressions, calculated as total ad spend divided by impressions and multiplied by one thousand.
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How CPM is calculated
CPM = (ad spend / impressions) x 1,000. The M is the Roman thousand, not a million, so a sponsor paying $600 to reach 40,000 impressions is buying at a $15 CPM. Because the formula sits on the advertiser's side of the transaction, a platform CPM tells you what the buyer was charged, not what arrives in your account.
On YouTube that distinction is visible in one screen. The Revenue tab reports the advertiser-side price as CPM and the creator-side figure as RPM, which is your share after YouTube's cut and across all views rather than only monetised ones. A sponsorship quoted directly has no such split: the fee you agree is the whole price, so its CPM and your effective RPM are the same number.
Three per-thousand metrics creators mix up
| Metric | Formula | Whose side it describes |
|---|---|---|
| CPM | (ad spend / impressions) x 1,000 | What the advertiser is charged |
| RPM | (your revenue / views) x 1,000 | What you keep per thousand views |
| CTR | (clicks / impressions) x 100 | How often the ad or thumbnail is acted on |
Pricing a sponsorship
CPM is the unit that makes two sponsor offers comparable. A brand offering $2,400 for a 60-second integration in a video that has settled at 80,000 views is paying a $30 CPM: 2,400 divided by 80,000, times 1,000. A second brand offering $1,500 for the same slot is paying $18.75. Expressed per thousand, the gap is a reason to decline rather than a feeling, and it is the figure you put in a media kit. Our creator pricing calculators will do the division before you reply.
What moves a CPM
We publish no benchmark range, because a CPM only reads as high or low against another CPM for the same topic, the same audience country and the same ad format. Four things move yours: how many advertisers bid against your subject, where your viewers are, whether a video carries skippable or non-skippable inventory, and whether the views are long-form or Shorts, which YouTube monetises through a separate pool. Your own month-over-month figure in YouTube Analytics is the comparison that holds.
What analytics tools add
Third-party tools sit on top of YouTube's data rather than replacing it, so they help with the inputs to CPM, impressions and click-through and how contested a topic is, while the revenue columns still come from YouTube Analytics. TubeBuddy charges $4.99 per month for its Pro tier and vidIQ $7.50 per month for Pro, both prices checked in June 2026, and both keep a free tier that covers view and tag data. The vidIQ and TubeBuddy comparison sets out where they diverge, and the rest of the creator analytics category covers cross-platform reporting.
Frequently asked questions
What does CPM stand for?
Cost per mille, from the Latin for thousand, so CPM is the cost of one thousand ad impressions. Advertisers and ad platforms use it as a buying unit. Creators mostly meet it in YouTube Analytics, where it is the advertiser-side price attached to their inventory rather than income.
What does $15 CPM mean?
The advertiser pays $15 for every thousand impressions of the ad. On a video that serves 60,000 ad impressions, that is $900 of advertiser spend. Less reaches you, because YouTube takes its share and not every view carries an ad. The creator-side equivalent is RPM.
What is a CPM in marketing?
The same metric from the buyer's seat: a price per thousand impressions used to compare one placement with another. A marketer choosing between a newsletter slot and a podcast read divides each quoted fee by audience size, multiplies by 1,000, and compares the two CPMs on one basis.
Is $4 CPM good?
On its own it says nothing. A CPM reads as high or low only against other CPMs for the same topic, audience country and ad format, which is why we publish no range. Compare your own figure month over month, and compare sponsor offers against each other.