The CPM Formula

CPM Formula

CPM = (ad cost / post views) × 1,000
Always use actual recent post views — not the subscriber count. A channel with 30K subscribers but 800 views/post has an effective CPM dramatically higher than the owner will quote.

CPM Benchmarks by Niche

NicheCPM RangeWhy
Entertainment / Humor$2–5High reach, lower purchase intent
News / Politics$3–7General audience, passive readers
Lifestyle / Travel$4–9Aspirational, consumer-brand friendly
Business / Marketing$5–12Decision-makers with higher LTV
Tech / SaaS$8–18Tech buyers, strong conversion intent
Finance / Crypto$10–25High-value audience, strong buying power

The CPM Trap to Avoid

Watch out

Many owners quote CPM based on subscriber count. Always demand actual post views. A 50K channel with only 2K views/post has an effective audience of 2,000 — not 50,000. The difference can be 25×.

How to Evaluate a Channel Before Buying

  1. Request screenshots of the last 15 post stats (or verify via Channel OS tracking)
  2. Calculate average views per post
  3. Apply CPM = (your price / average views) × 1,000
  4. Compare to niche benchmarks above
  5. Check ER — low ER means passive readers who are unlikely to click

Tracking ROI Over Time

Channel OS Ad Journal logs every placement: channel, cost, views delivered, and calculated CPM. After 10+ placements you build a personal benchmark — which channels over-deliver, which channels disappoint, and which niches give you the best ROI for your specific product.

Try Channel OS free

Connect your first channel in 30 seconds. No download, no registration — works inside Telegram.

Open Channel OS →

Related articles