Which tool do I need?
Trying to work out what a channel earns — yours or one you're studying? The RPM Calculator. Give it views and an RPM to estimate revenue, or give it real earnings and views to find your actual RPM and CPM. Use the benchmark tables to see whether your niche and audience country explain the number.
Negotiating a brand deal, or auditing your own growth? The Engagement Rate Calculator. Compute the follower-based rate when a brand asks for it, and the reach-based rate when you want the honest picture — the tool explains why the two disagree and which one to trust for which conversation.
About to upload a video? Run the packaging through the Thumbnail Checker first. A thumbnail that looks great at full size routinely dies at sidebar and mobile-feed size, and the duration badge sits exactly where people put their text. The banner mode does the same job for channel art against YouTube's safe area.
Still writing the video? The Script Timer tells you how long your draft will run at a real speaking pace — or, working backwards, how many words fit a target runtime, which is the fastest way to stop a 10-minute idea becoming a 22-minute video.
Repurposing widescreen footage for Shorts, TikTok or Reels? The Aspect Ratio Calculator gives you the exact 9:16, 1:1 and 4:5 crop dimensions from your source resolution, so you're not eyeballing the crop in the editor.
Where these tools quote benchmarks — RPM by niche and country, engagement by platform and account size — the figures are dated and sourced on each page, because creator-economy numbers drift fast and an undated benchmark is worse than none. Check the "last verified" line on each tool before leaning on it.