Do I need to install anything?

No. It runs in any modern browser, free, with no account required.

For K-12 Students · k-Means Clustering

k-Means Clustering for an autocomplete

Built for k-12 students learning it in middle or high school. Watch the idea come alive with plain-language steps and everyday examples — perfect for projects and homework. Simulate an autocomplete live below — adjust the inputs and watch it respond, right in your browser.

k-Means ClusteringLive

finding groups in data

Controls

Presets

Number of clusters k

Iterations

k-means alternates two steps: assign each point to its nearest centroid, then move each centroid to the mean of its points. Repeat and the clusters snap into place. Choosing the right k, and where to start, both matter. Educational tool.

▶ Run in Python

Data Inspector

Clusters3

Points80

Statusconverged

Governing equation

J = k = 1 \sum 3 x \in C_{k} \sum ∥ x - μ_{k} ∥^{2}, μ_{k} = \frac{1}{∣ C _{k} ∣} x \in C_{k} \sum x

Reading this result: k = 3 is fewer than the 4 true blobs, so Lloyd’s algorithm is forced to merge neighbouring groups into one cluster and real structure is lost. Try k = 4.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

or unlock everything with Pro →

Also for:Students Researchers Educators Engineers Hobbyists & Makers First Responders General version →

More with k-Means Clustering

k-Means Clustering for a neural network k-Means Clustering for a sorting algorithm k-Means Clustering for a search tree k-Means Clustering for a hash table k-Means Clustering for a recommendation engine k-Means Clustering for an image classifier k-Means Clustering for a chatbot k-Means Clustering for a pathfinding AI

Frequently asked questions

Is this good for k-12 students?: Yes — this version of "k-Means Clustering for an autocomplete" is framed for k-12 students learning it in middle or high school. Watch the idea come alive with plain-language steps and everyday examples — perfect for projects and homework.
Do I need to install anything?: No. It runs in any modern browser, free, with no account required.