When should I use a data table?

When exact values matter more than patterns ● Reference lookup tables ● Exporting or printing data ● Supplementing a chart for accessibility

When should I avoid a data table?

When visual patterns or trends are the primary insight ● Very large datasets that need aggregation first

What are common mistakes with data tables?

Too many columns making the table hard to scan ● Missing alignment - numbers should be right-aligned ● No row striping or borders, making rows hard to follow

Specialized

Data Table

A structured tabular display with sortable columns, ideal when users need exact values rather than visual patterns.

Product Sales by Region

Q4 2025 revenue and unit breakdown

Make a data table with your data

Use a data table when…

When exact values matter more than patterns
Reference lookup tables
Exporting or printing data
Supplementing a chart for accessibility

Avoid when…

When visual patterns or trends are the primary insight
Very large datasets that need aggregation first

Data it needs

Property	Value
Min Rows	2
Min Columns	2
Column Types	stringnumber

Visual anatomy

Marks

textrule (row dividers)

Channels

position (row/column)alignment

Axes

column headers (also serve as the sort affordance)

Guiding principles

Consider instead

Heat Table

When you want both exact values and color-coded patterns

Bar Chart

When ranking or comparison is the goal

Common mistakes

Too many columns making the table hard to scan
Missing alignment - numbers should be right-aligned
No row striping or borders, making rows hard to follow

History

Tables are the oldest form of data presentation, predating charts by millennia. Modern interactive data tables evolved from spreadsheet software in the 1980s.

Accessibility notes

Use semantic <table> markup with <th> headers. Support keyboard navigation for sorting.

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