# Count Up

> A number that animates up (or down) to a target value the first time it scrolls into view, formatted with locale-aware grouping and decimals, for stats and totals on a landing page.

- Author: [zweiundeins](https://21st.dev/@zweiundeins)
- Library: zweiundeins
- License: MIT
- Tags: Counter, Number, Animation, Statistics, Intersection Observer
- Live preview: https://21st.dev/@zweiundeins/components/count-up

## Install

```bash
npx shadcn@latest add "https://21st.dev/r/zweiundeins/count-up?api_key=$API_KEY_21ST"
```

Requires a 21st API key (generate one at https://21st.dev/mcp) passed as `API_KEY_21ST`. Free accounts get a limited number of installs per day; unlimited on a paid plan — see https://21st.dev/pricing.

Full component directory: https://21st.dev/llms.txt · More like this: https://21st.dev/community/components/s/counter.md