---
title: Chunk Data into Groups of 5-9
impact: HIGH
tags: ux, millers, chunking, memory
---

## Chunk Data into Groups of 5-9

Working memory holds about 7 items. Group and chunk large data sets so they're scannable.

**Incorrect (raw unformatted data):**

```tsx
<span>4532015112830366</span>
```

**Correct (chunked for readability):**

```tsx
<span>4532 0151 1283 0366</span>
```

Reference: Miller, G. A. (1956). The magical number seven, plus or minus two.