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CPM.calc
CPM.calc — Free CPM calculator for ad cost, reach, and budget planning
About CPM.calc
CPM.calc is a free web tool for checking advertising math before or after a media buy. It calculates CPM, estimates required budget or impressions, explains the formula, and includes a campaign-planning view with clearly labeled assumptions. The basic calculator does not require an account.
- Who it is for
- People planning or reviewing advertising campaigns, including marketers, media buyers, and small businesses.
- Problem it solves
- Working out the relationship between advertising spend, impressions, and CPM can be difficult when planning or reviewing a media buy.
- The solution
- Enter known campaign values to calculate CPM or estimate a budget or impressions. The formula explanation and campaign-planning view make assumptions clear.
- What makes it unique
- It combines CPM calculations, budget and impression estimates, a formula explanation, and a campaign-planning view with clearly labeled assumptions in a free tool.
Features
CPM and campaign estimates
Calculate CPM or estimate the budget or impressions needed.
Details
- Platforms
- Web
- Pricing
- Free
- Built for
People planning or reviewing advertising campaigns, including marketers, media buyers, and small businesses.
- Building since
2026
Technology
CPM.calc screenshot showing the title CPM Calculator
1 / 1Website performance
Recorded mobile lab measurements and finalized weekly standings from IndieTools Speed.
CPM.calc website speed overview
98
Performance scoreGood
In IndieTools' mobile lab test on November 11, 2026, the CPM.calc website scored 98 out of 100 (good). All 5 lab metrics were rated good.
Measured (UTC)
- LCPLargest Contentful Paint
- 1.70 s
- Good
- TBTTotal Blocking Time
- 13 ms
- Good
- CLSCumulative Layout Shift
- 0.000
- Good
- FCPFirst Contentful Paint
- 1.70 s
- Good
Not ranked in a finalized week yet.
CPM.calc lab metrics
| Metric | Result | Status | Trend |
|---|---|---|---|
| Mobile lab testMid-range phone on a throttled 4G connection, two runs averaged. Changes compare with the run on Nov 11. | |||
| Performance score GoodUp 2 points | 98 / 100 | GoodUp 2 points | |
| First Contentful Paint GoodAbout the same | 1.70 s | GoodAbout the same | |
| Largest Contentful Paint GoodAbout the same | 1.70 s | GoodAbout the same | |
| Speed Index Good1.54 s faster | 2.98 s | Good1.54 s faster | |
| Total Blocking Time GoodAbout the same | 13 ms | GoodAbout the same | |
| Cumulative Layout Shift GoodAbout the same | 0.000 | GoodAbout the same | |
| Unthrottled observationsTimed on the test machine's own fast connection, so they read lower than the lab metrics above. | |||
| Page load 187 ms faster | 637 ms | 187 ms faster | |
| Server response About the same | 2 ms | About the same | |
CPM.calc performance history
2 comparable mobile lab runs since November 11, 2026. Choose a metric and a range, then move along the line to read each run.
CPM.calc Speed ranking
Not ranked yet. Ranks appear once a week with this product is finalized.
Stored lab observations from controlled test runs, not real-user Core Web Vitals or a guarantee of search rankings. Weekly standings remain attached to their finalized edition.Method psi-mobile-two-sample-mean-v1, 2 samples per reading. Lab results can vary between runs.
Domain Rating
Domain Rating by Ahrefs- DR4 (primary model)
- 0
First DR4 reading
- DR3
- 0
First DR3 reading
Model difference0. DR4 matches DR3 for this domain.
Measured · cpm-calculator.xyz
What do DR4, DR3 and the model difference mean?
- DR4:
- Ahrefs' newer model. It gives more weight to links from sites with organic search traffic and rates a subdomain on its own links.
- DR3:
- The previous model, shown in the Ahrefs app until 1 December 2026.
- Model difference:
- DR4 minus DR3 for the same domain. The models calculate differently, so this is not growth or a drop; the “since” lines compare each model with itself.
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