Free tool
Enter your current subscribers, watch hours, and average upload pace. See time to 1,000 subs + 4,000 watch hours, estimated monetization timeline, and what to prioritize next.
Most creators conflate three different growth metrics — subscribers, watch hours, and revenue — when they ask “how do I grow my channel?”. They sit on different parts of the funnel and respond to different inputs. Subscribers measure trust at the channel level. Watch hours measure attention at the content level. Revenue measures monetization quality at the audience-and-niche level. Optimising for one without the others produces lopsided channels: a channel with 100,000 subscribers and 200 watch hours per video is a channel that grew on a viral upload and stalled.
The Partner Program threshold (1,000 subscribers + 4,000 public watch hours in the trailing 12 months) is the gate that turns an active channel into a monetised channel. Anything before that gate is hobby growth; anything after it is income. The calculator below models that gate specifically, but the math underneath it — subscriber-to-view ratios, watch-hour decay, niche-specific RPM — applies to channels at every stage.
Subscribers grow as a function of channel-page conversions: a viewer watches a video, decides the channel posts content they want more of, and clicks subscribe. The conversion rate from view to subscribe is typically 0.5% to 2% for established creators and 2% to 5% for niches with tight community alignment (gaming, finance, tutorials). Watch hours grow as a function of average view duration multiplied by view count. A 10-minute video that retains 50% of viewers produces 5 watch-minutes per view; a 20-minute video at 35% retention produces 7 watch-minutes per view. Longer-form content with reasonable retention is the structurally faster path to 4,000 hours.
Revenue per 1,000 monetised views (RPM) is the third leg of the growth metric and it varies wildly by niche. Finance and tech channels run $8 to $20 RPM. Education runs $4 to $8. Gaming runs $2 to $4. Music runs $0.50 to $1.50. The calculator applies the midpoint for the niche you select, but the spread is the more important number — finance creators clear minimum-wage income off 100,000 monthly views, while music creators need an order of magnitude more views to hit the same dollar figure. Plan accordingly. The official YouTube Partner Program eligibility documentation lays out the technical requirements; the RPM math is not in there because it is emergent from your audience.
From YouTube Studio → Channel analytics
From YouTube Studio → Analytics → Revenue (public video hours only)
Trailing 3 months, from Studio dashboard
Time to Partner Program
~2y 1mo
Subs: ~2y 1mo · Hours: ~6 months
Monthly organic pace
6,000 views
800 hours · 30 subs/mo
Monetization estimate (post-YPP)
$17/mo
$5.00 RPM category midpoint · 55% creator share
Subscribers are your bottleneck. Buying 500–1,000 subscribers compresses your timeline without affecting watch-hour math.
Buy YouTube subscribersGrowth velocity is not linear, and the bottlenecks change as the channel matures. Channels stuck below 1,000 subscribers face a different problem than channels stuck below 10,000, and the calculator’s recommendation logic changes accordingly.
The bottleneck below 1,000 subscribers is almost always discovery, not retention. YouTube’s recommendation engine doesn’t surface your videos to non-subscribers until the channel-level engagement signal clears a baseline, which usually arrives somewhere between 200 and 800 subscribers depending on the niche. The fix at this stage is community building — getting the first 200 to 500 subscribers from outside-platform sources (existing audience on Instagram or TikTok, niche communities, friends, or paid promotion). Once the channel signals cross the threshold the algorithm starts picking up the load and the curve steepens significantly.
Above 1,000 subscribers, discovery is no longer the bottleneck — the algorithm is now working in your favour and showing your videos to non-subscribers. The new bottleneck is the 4,000 watch-hours gate. Hitting 1,000 subscribers in 6 months and then taking another 12 months to hit watch-hours is the median pattern. Average video length, retention rate, and upload frequency all matter here; long-form content at decent retention compounds the watch-hour total roughly 3 to 5x faster than short-form-only content. Buffer’s research on YouTube algorithm signals is the closest thing to a public-domain primer on what the ranker reads at this stage.
Above 10,000 subscribers most channels have crossed the monetization gate and are now optimising for revenue rather than scale. The defining decision at this stage is whether to broaden the niche (chase more views by drifting toward more general topics) or deepen it (specialise harder and command higher RPM, more sponsorships, and a more loyal audience). The high-RPM niches reward specialisation; the music and vlog categories reward broadening. The calculator doesn’t make this call for you, but the niche selector surfaces the RPM spread so the trade-off is visible.
The calculator models YouTube Partner Program eligibility math using three inputs: current subscriber count, current watch hours in the trailing 12 months, and average monthly upload pace. From those, it projects forward assuming your historical growth rate continues and factors in YouTube’s rolling 12-month watch-hour decay.
YouTube Partner Program requires 1,000 subscribers AND 4,000 watch hours (public-video watch time, excluding Shorts and private videos). The watch-hour window slides — hours watched 13 months ago drop off the running total. Channels close to threshold often struggle because decay eats their accumulated hours faster than new uploads replace them. A channel that picked up 3,000 watch hours from a viral video 11 months ago is going to lose those hours the moment the 12-month window rolls past, regardless of what they upload this month. The calculator surfaces this decay dynamic and estimates the monthly pace you need to outrun it.
The monetization estimate uses category-specific RPM benchmarks: finance and tech at $8 to $20 per 1,000 views, education at $4 to $8, gaming at $2 to $4, music at $0.50 to $1.50, vlogs at $3 to $7. The calculator applies the midpoint for your selected category. Actual RPM varies by audience geography, watch-time distribution, and ad-inventory match — the calculator’s figure is an order-of-magnitude estimate, not a binding forecast. Channels with a heavy US and UK audience pull RPMs at the high end of the range; channels weighted toward lower-CPM countries pull at the low end.
Linear extrapolation from current growth rate breaks for three reasons. First: cohort decay. The viewers your channel attracts in month one are not the same viewers in month six; 30% to 50% drop off and need to be replaced. Second: algorithm changes. YouTube’s ranker updates roughly four times a year and each update reshuffles which content types get distribution. Third: niche saturation. The first 1,000 subscribers in a niche are easy because the niche isn’t crowded; the next 9,000 are harder because someone else has already hit the easy keywords. The calculator’s confidence interval widens as the projection horizon extends — anything past 6 months should be read as directional, not predictive.
If the calculator shows you’re less than 90 days from threshold, the fastest path is usually to stay the course and upload consistently. The math has you arriving on time and any acceleration spend has diminishing marginal value. If the calculator shows you’re 90 to 180 days out, the bottleneck is usually upload frequency or video length — both are free to adjust. If the calculator shows more than 180 days out, organic-only growth at your current pace will be outrun by watch-hour decay, and the calculator surfaces watch-hour or subscriber purchases as runway-compression options.
Purchased growth doesn’t replace organic growth — it supplements it for creators who already produce quality content but need to clear the monetization gate faster than organic velocity would. The arithmetic is straightforward: at $40 to $80 per 1,000 watch hours of supply-pool delivery, clearing a 1,500-hour gap costs $60 to $120, and the monetisation revenue from clearing the gate amortises that spend in the first 30 to 60 days for any channel doing more than 10,000 monthly views. For sub-10,000-views channels, organic patience is usually the better economic call. Likes.io publishes the per-1,000-hour rate directly on the YouTube views service page — no opaque tiered pricing.
Browse the YouTube service catalogue or read how watch-hour delivery actually works in practice.