WhatUnit
Use a flowchart to choose a CSS length unit for a layout or interface.
About WhatUnit
WhatUnit is a web page that presents a flowchart to help you decide which CSS length unit to use for a layout or interface. The diagram is interactive: you click and drag to move around it, and use ctrl/cmd plus the mouse wheel to zoom in and out. The page also links to a signup for a weekly CSS newsletter. No pricing, licensing or plan details are stated on the page.
Key features
- Flowchart for choosing a CSS length unit
- Interactive diagram you can pan by clicking and dragging
- Zoom in and out with ctrl/cmd plus mouse wheel
- Signup link for a weekly CSS newsletter
Best for: Web developers and designers who want a quick reference for picking a CSS length unit for a layout or interface.
Good for
- Narrow focus on one decision: which CSS length unit to use
- Diagram navigation is explained, with pan and zoom controls
- Available in English on the web
Watch out for
- No pricing, licensing or plan information is provided
- Content is only offered in English
WhatUnit at a glance
- Website
- whatunit.com
- Category
- Development › CSS & Web Styling
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
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WhatUnit FAQ
How do I move around the flowchart?
Click and drag to move around the diagram, and use ctrl/cmd plus the mouse wheel to zoom in and out.
Does the site offer a newsletter?
Yes, the page includes a signup link for a weekly CSS newsletter.
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