When to Use Dwarf Planet Size Comparison 3D Explorer
Open the Dwarf Planet Size Comparison 3D Explorer when you need to compare Ceres, Pluto, Haumea, Makemake, and Eris side by side - five real diameter, distance, and period figures in one WebGL scene - without hunting through five separate reference pages.
A five-minute classroom demo
A five-minute classroom demo starts when you open the explorer, let the class see all five spheres in the lineup, then click Ceres and Eris in turn so a roughly 940 km world and a 2,326 km world sit on the same screen at the same time.
Settling a "how big is Pluto really" argument
Settling a "how big is Pluto really" argument is exactly the question this page answers: Pluto and Eris are close in size to each other, both far larger than Ceres, and both a fraction of any of the eight IAU planets.
Where this page does not fit
Where this page does not fit: it does not include the Sun or the eight IAU planets - for those see Planet Size Comparison 3D Explorer - and it does not model the Kuiper Belt as a structure of countless smaller objects, only these five named bodies; for the region itself see Kuiper Belt and Oort Cloud 3D Explorer.
Why trust these tools
- Ten-plus years of web tooling. The freetoolonline editorial team has shipped browser-based utilities since 2015. The goal has never changed: get you to a working output fast, without an install.
- No install, no sign-up. Open a tool and get a working output in seconds - nothing to download and no account to create. Tools that need heavy processing run it on our service, so even a low-powered machine gets the job done.
- Analytics stops at the page view. We measure which pages get visited, not what you type or upload inside a tool. There is nothing to sign in to and no profile is attached to your input.
- Open-source core components. The processing engines underneath (libheif, libde265, pdf-lib, terser, clean-css, ffmpeg.wasm, and others) are public and audit-able. We link to each one in its tool page's footer.
- Free, with or without ads. All tools are fully functional without sign-up. The Disable Ads button in the header is always available if you need a distraction-free run.