What is Multi-Monitor Calculator?

Multi-Monitor Calculator (multimonitorcalculator.com) is a browser-based planning tool for multi-monitor desktop setups. It lets you calculate screen metrics such as PPI, preview custom wallpapers, drag and rearrange monitors to test layouts, and search for monitors. It also includes prebuilt community-submitted setups for inspiration and lets you save, share, and submit your own. It is most useful before you buy monitors or commit to a desk layout, when you want to check how a configuration will look and fit.

What you can do with it

The site describes itself as "A Tool For Planning Your Multi-Monitor Setup!" and groups its features around four practical tasks:

• Screen calculations — calculate PPI and other screen calculations, useful for judging sharpness and scaling across monitors of different sizes and resolutions.
• Wallpaper preview — preview custom desktop wallpapers against your planned arrangement.
• Layout planning — drag and rearrange monitors to try out different layouts.
• Monitor search — search for your dream monitor within the tool.

Layout and desk-space controls

The planning canvas includes zoom controls and adjustable desk dimensions. You can increase or decrease the available desk width and height, so a layout can be checked against the physical space you actually have. The interface also includes undo and reset actions; resetting returns you to the default setup and discards progress, with a confirmation prompt warning that "All progress will be lost!" If you want to keep working, the prompt suggests creating a new setup via the + button in the top navigation bar instead.

Prebuilt setups for reference

Rather than starting from a blank canvas, you can browse community submissions that the site features as prebuilt setups. The listed examples cover a range of use cases:

These are useful as starting points: load one, then adjust monitor count, arrangement, and desk size to match your own equipment.

Saving, sharing, and submitting setups

• Generate a link — the tool creates a shareable link to your setup and copies it to your clipboard, so you can send it to friends or open it on other devices.
• Submit your setup — you can submit your configuration as a community submission with a setup name, a description, and a note on what makes it unique. The site states that submissions may be featured as prebuilt setups for others to see, and confirms receipt after submission.

When it is the right tool

Use Multi-Monitor Calculator if you are planning a multi-display desk and want to compare arrangements, check screen sharpness via PPI, or visualize wallpapers before buying or rearranging hardware. It is a planning aid, not a storefront: the available site information does not list pricing, accounts, or purchase options, so treat it as a free-to-access planning page only to the extent the site itself shows. If you already know your exact layout and only need a single PPI number, a basic calculator may be faster; if you need to iterate on monitor positions, desk fit, and shared layouts, this tool's drag-and-drop canvas and link sharing are the reason to use it.