What is a 19 inch rack?

The standard rack size for networking and servers: the mounting holes are 19 inches apart. Wall-mount, open-frame and enclosed racks all use it.

How much space is 1U?

One rack unit (1U) is 1.75 inches tall. A 12U rack holds twelve 1U items, or any mix that adds up to 12U.

Can two small devices share one 1U row?

Yes. Many small devices fit two side by side in one 19 inch row. The planner can place them as a double or combine two different devices in one row.

Yes. There's no account. The link holds your whole layout, so you can share it or finish it later.

19" rack planner

Plan your 19 inch rack by rack unit. Search a device to place it, see which gear still needs a mount, and share the build with one link.

Rack mount for Lenovo ThinkCentre Tiny - Fits M70q-M90q & M710q-M920q

Rack mount for Minisforum MS-01, MS-A2, MS-R1 & MS-03

Rack mount for Dell OptiPlex Micro - Fits All 3000-7000 Series

Most mini PCs, Macs, modems and small switches can't go in a rack on their own. When you add one, the planner puts it in a rack mount made to fit that exact device, from 3D Rack Mounts. Gear that already has rack ears goes straight in.

Your rack Height

Find your device

Gear with its own rack ears

Example builds

In a mount made for it Rack-ready Open

Tap an open slot to choose where the next item goes. Drag an item to move it (on a phone, press and hold first). Tap it to remove it.

Example 19 inch builds

Open one in the planner and change it to match your gear.

Plan a specific rack

Most planned 19" mounts

Devices that need a mount to go in a 19 inch rack, most popular first. Each one links to its mount.

Questions

What is a 19 inch rack?: The standard rack size for networking and servers: the mounting holes are 19 inches apart. Wall-mount, open-frame and enclosed racks all use it.
How much space is 1U?: One rack unit (1U) is 1.75 inches tall. A 12U rack holds twelve 1U items, or any mix that adds up to 12U.
Can two small devices share one 1U row?: Yes. Many small devices fit two side by side in one 19 inch row. The planner can place them as a double or combine two different devices in one row.
Is the planner free?: Yes. There's no account. The link holds your whole layout, so you can share it or finish it later.

How it works

Pick a rack. 10" mini racks (DeskPi, GeeekPi, Lab Rax and similar) or a standard 19" rack, at the height you have.
Add your gear. Search a device to place it. Gear that already has rack ears, like UniFi and Netgear switches, Synology RackStations, UPS units and PDUs, is in the list too and goes in as rack-ready.
See what's missing. Anything without ears shows as "needs a mount", with a mount you can buy for it.
Share it. The link holds the whole layout, so a build can be posted, compared or finished later.