Netflix ads now reportedly reach 250 million viewers monthly, about 3% of the world's population

At a glance:

• Netflix claims its ad-supported tier now reaches 250 million monthly viewers, roughly 3% of the global population.
• The company plans to expand ad-serving from 12 affluent countries to 27, but third-party data shows only 14% year-over-year growth versus Netflix's implied doubling.
• Ad revenue is forecast at $2.15 billion for 2025, less than 5% of Netflix's total revenue, while subscribers see up to five minutes of ads per hour.

What happened: Netflix's ad tier growth claims

Netflix announced that its advertising-supported tier now reaches 250 million viewers each month, a number the company calculates as roughly 3% of all humanity. The ad business, once anathema to the DVD-by-mail purist era, has become a rapidly growing revenue stream. According to Netflix, the ad tier's claimed viewership more than doubled from 94 million at roughly this time last year, and that 2024 figure was itself double the viewership reported in May of that year. The service currently serves ads in 12 mostly affluent countries, with plans to expand to 27.

These numbers are aimed squarely at advertisers, framing Netflix as a mass-reach platform comparable to traditional television. The company's internal metrics focus on viewers rather than subscribers, which can inflate the headline figure given that multiple people may share a single account or watch on different devices.

The discrepancy: Netflix's claims vs. third-party data

While Netflix's self-reported numbers suggest explosive growth, independent research paints a more measured picture. Deadline reported earlier this year that, according to the research firm Digital i, the ad-supported Netflix tier grew only 14% year-over-year. That stands in stark contrast to the doubling implied by Netflix's own viewer-count comparisons. The gap likely stems from Netflix counting anyone who sees an ad — including users on shared accounts or free trials — while third-party trackers count active subscriptions or unique logged-in users.

The Digital i report also found that only 40% of active Netflix subscriptions are ad-supported. That means the majority of Netflix's 300 million-plus global subscribers still pay for the ad-free tier, a limiting factor for the ad business's immediate upside.

Why it matters: Ad revenue's small but growing share

Despite the rapid viewer growth, advertising remains a minor contributor to Netflix's bottom line. According to a Wall Street Journal story from last year, Netflix expected to generate $2.15 billion in ad revenue in 2025, against total revenue of roughly $45 billion — less than 5%. The company still relies overwhelmingly on subscription fees, and the ad tier's lower monthly price means subscriber revenue per user is lower even as ad revenue is added.

For viewers on the ad-supported plan, the trade-off is tangible: Netflix serves up to five minutes of commercials per hour, consuming about 8% of viewing time. As the ad load remains modest compared to linear TV, it represents a significant chunk of attention that Netflix monetizes at a relatively low rate. The expansion to 27 countries over the coming months will test whether advertisers are willing to pay premium rates outside the wealthy first-wave markets.

What to watch next: International expansion and measurement standards

Netflix's move from 12 to 27 ad-serving countries is the next major catalyst for the ad business. New markets will likely include large populations with growing middle classes, but also lower advertising CPMs (cost per thousand impressions). The discrepancy between Netflix's stated viewership and third-party audits like Digital i's will continue to matter as brands demand proof of return on ad spend. Netflix is also investing in its own ad-tech stack and measurement partnerships to give advertisers more granular data. How quickly the ad share of total revenue climbs — and whether subscriber growth in the ad tier accelerates — will determine if Netflix can truly transform into an advertising powerhouse alongside its subscription model.