RPM, CPM and the Money Nobody Explains Properly
Two channels each get a million views in a month. One earns a few hundred pounds; the other earns tens of thousands. Neither is doing anything unusual, and no one is being cheated. The gap is entirely explained by variables that most creators never look at, because the headline "views" number hides all of them.
This piece explains what the numbers in your revenue dashboard actually mean, why they differ so wildly between channels, and which of the underlying variables you can genuinely influence.
- CPM is what advertisers pay. RPM is what you keep, divided across all your views.
- Most views are not monetised views, and that gap is the biggest single driver of RPM.
- Topic and audience location move earnings far more than view count does.
- RPM is the only number worth tracking month to month. CPM is mostly noise to a creator.
The three numbers and how they relate
Your analytics show several revenue figures that sound interchangeable and are not.
| Metric | What it means | Whose money |
|---|---|---|
| CPM | Cost per thousand ad impressions — what advertisers paid, before your share is taken out. | The advertiser's spend. |
| Playback-based CPM | The same, but measured per thousand playbacks that showed an ad rather than per thousand ad impressions. | Still the advertiser's spend, on a different denominator. |
| RPM | Your revenue per thousand views — across all views, monetised or not, after the platform's share, and including non-ad income. | Yours. |
The critical difference is the denominator. CPM counts only the views where an ad was actually served. RPM counts every view your video received. Since a substantial share of views never carry an ad — the viewer had an ad blocker, was a paid subscriber, watched in a region with thin advertiser demand, or the video was not eligible — RPM is always lower than CPM, often by a lot.
There is also a second difference: RPM is net of the platform's revenue share, whereas CPM is gross. And RPM includes revenue from sources other than ads — memberships, Super Chat, and similar — where those apply.
Which one to watch: RPM. It is the only figure that answers "what does a thousand views earn me?" CPM moves with advertiser bidding and tells you about the ad market, not about your business. Creators who track CPM tend to panic in January and celebrate in December for reasons that have nothing to do with their channel.
Why your CPM and your RPM look so different
Suppose your dashboard shows a CPM of £18 and an RPM of £4. That is not an error and it is not unusual. Three things happened between those numbers:
- Not every view was monetised. If only 45% of your views carried an ad, the per-view revenue is immediately less than half of what the CPM implies.
- The platform takes its share. The advertiser's spend is split; the creator receives a portion of it under the Partner Program terms.
- Averages hide variance. A handful of high-value impressions can lift a CPM figure while the bulk of your views earned far less.
The monetised-playback ratio is the variable creators most often overlook and the one with the largest effect. A channel where 70% of playbacks carry an ad and a channel where 30% do will show dramatically different RPMs at the same CPM — and the difference is mostly driven by audience composition, not by anything the creator did wrong.
The seven variables that move your earnings
1Topic and advertiser demand
The single biggest factor. Advertisers bid far more to reach viewers of content adjacent to expensive purchases — finance, business software, insurance, legal services, high-end tools — than viewers of general entertainment. This is not a judgement about content quality. It is the value of the eventual customer. A channel about commercial property investment and a channel about mobile gaming can differ by an order of magnitude on identical view counts.
2Where your audience is
Advertiser competition varies enormously by country, driven by market size and purchasing power. A channel whose audience is concentrated in high-spend advertising markets will earn multiples of an otherwise identical channel with a globally distributed audience. This is one reason language choice is quietly an economic decision as well as a creative one.
3Ad formats and placement
Videos long enough to carry mid-roll ads can serve considerably more impressions per view than short ones. Skippable, non-skippable and bumper formats also price differently. This is a real lever, but a dangerous one — packing a video with breaks damages retention, and lost retention costs distribution, which costs far more than the extra impressions gained. Place breaks at natural section boundaries, not at fixed intervals.
4Seasonality
Advertiser budgets are cyclical. Spending typically climbs through the final quarter and drops sharply at the start of the calendar year. A January decline in CPM is an industry-wide pattern, not a signal about your channel, and creators who restructure their content in response to it are usually reacting to noise.
5Advertiser-friendliness of the content
Videos flagged as unsuitable for some advertisers are served a narrower pool of bidders, which lowers the price. This affects far more than the obvious categories — discussion of controversial events, strong language early in a video, and sensitive subject matter can all narrow the pool. The effect is on price, via reduced competition.
6Watch time per view
Longer average viewing means more opportunity for ads to be served and completed, and completed views of skippable formats are worth more than skipped ones. Retention therefore affects revenue twice: once through distribution and once through monetisation.
7Format mix
Short-form and long-form monetise through different mechanisms and at very different rates per view. A channel that shifts heavily toward short-form can see views rise sharply while revenue does not follow, which is disorienting if you are watching the view counter rather than the RPM.
A worked example
Illustrative figures — the point is the structure of the calculation, not the specific numbers, which vary by channel, region and period.
| Channel A — general entertainment | Channel B — business software reviews | |
|---|---|---|
| Monthly views | 1,000,000 | 1,000,000 |
| Share of views carrying an ad | ~35% | ~60% |
| Audience location | Globally spread, mostly lower-bid markets | Concentrated in high-bid markets |
| Typical video length | 4 minutes — no mid-rolls | 16 minutes — several mid-rolls |
| Resulting RPM | Low single figures | Ten times higher or more |
Neither channel is failing. They are in different businesses that happen to share a distribution platform. This is why comparing your earnings to a figure someone quoted in a video about their own channel is not informative — you are almost certainly comparing across several of these variables at once.
It also explains why so many channels with large audiences derive most of their income from sponsorships rather than ads. If your topic sits in a low-bid category, the direct route to advertiser money is to sell it yourself — which is what a rate card is for.
What you can actually control
Sorted by how much influence you genuinely have:
- Topic selection (high). Within your subject area there is usually a range of commercial adjacency. A tools channel can cover both hobby projects and professional equipment; those attract different advertiser interest. This is the biggest lever and the one most creators never consciously use.
- Length and mid-roll placement (moderate). Real, but bounded by retention. Never trade meaningful watch time for an extra break.
- Retention (moderate, and it compounds). Improves distribution and monetisation simultaneously. See retention editing patterns.
- Avoiding unnecessary advertiser-friendliness limits (moderate). Not a call to sanitise your work — just be aware that the choice has a price attached, and make it deliberately.
- Audience geography (low, slow). Shifts over years with language and subject matter. Not something to engineer directly.
- Seasonality (none). Plan cash flow around it; do not chase it.
The structural point: ad revenue is the least controllable income a creator has. It is set by an auction you are not part of, for an audience you only partly choose, at prices that swing with the calendar. Treating it as the foundation of a creator business is building on the one revenue line you have least influence over.