Split your screen by dragging a window to the edge

The fastest way to split your screen is to grab the title bar of any open window and drag it to the left or right edge of your monitor until it snaps into place. On Windows 10 and 11, drag a window all the way to the left edge and it will automatically resize to fill the left half of your screen. The other half stays empty until you click on another window or open a new one. On Mac, you can use Mission Control or drag a window to the top-left corner and hold it there until the screen divides.

This method works when ready and requires no settings changes. The window stays snapped even if you move your mouse away, and you can adjust the dividing line between the two windows by clicking and dragging the border between them. To unsnap a window, drag it away from the edge or double-click its title bar.

Key Takeaways

  • Dragging a window to the left or right edge of your screen automatically resizes it to fill half the display on Windows 10, 11, and Mac.
  • Windows 11 offers Snap Layouts, a menu that appears when you hover over the maximize button and lets you choose from preset split configurations.
  • You can adjust the dividing line between two snapped windows by clicking and dragging the border between them to give one window more space.
  • Virtual desktops let you create separate workspaces on the same monitor, useful if you need more than two windows visible at once.

Use Snap Layouts on Windows 11 for preset configurations

Windows 11 includes a feature called Snap Layouts that shows you split-screen options before you commit to one. Hover your mouse over the maximize button (the square icon in the top-right corner of any window) and a menu appears with layout choices: two windows side by side, three windows with one taking up two-thirds, four windows in a grid, and others. Click the layout you want, and Windows shows you which open windows can fill each section.

Snap Layouts are faster than dragging if you want a specific arrangement. Once you select a layout, click each empty section to assign a window to it. You can change the layout later by hovering over the maximize button again and picking a different option. This feature does not exist on Windows 10, which only supports the drag-to-edge method.

Resize the dividing line to give one window more space

After you split your screen, the dividing line between the two windows sits in the middle by default. Move your cursor to the border between the two windows until it changes to a resize cursor (a double-headed arrow), then click and drag left or right to shift the dividing line. One window grows while the other shrinks. Release the mouse button when you reach the size you want.

This adjustment is useful when you need to read more text in one window or see more detail in the other. The dividing line stays where you place it, even if you switch between windows or minimize one of them. If you want to return to a 50-50 split, drag the line back to the center of the screen.

Create virtual desktops to organize more than two windows

If splitting your screen into two windows is not enough space, virtual desktops let you create separate workspaces on the same monitor. On Windows 10 and 11, press Windows key + Tab to open the Task View. Click "New desktop" in the top-left corner to create another workspace. You can now open different windows on each desktop and switch between them without closing anything.

On Mac, swipe up with four fingers to open Mission Control, then click the "+" button in the top-right corner to add a new desktop. Switch between desktops by swiping left or right with four fingers or by clicking the desktop thumbnail in Mission Control. You can combine virtual desktops with split-screen windows—split your screen on Desktop 1, then create Desktop 2 with a different pair of windows, giving you four windows visible without overlapping.

Use keyboard shortcuts to snap windows faster

Windows 10 and 11 include keyboard shortcuts that snap windows without dragging. Press Windows key + Left Arrow to snap the active window to the left half of your screen, or Windows key + Right Arrow to snap it to the right half. The next window you click will fill the other half automatically. On Windows 11, press Windows key + Z to open Snap Layouts without moving your mouse.

Mac does not have built-in keyboard shortcuts for split-screen snapping, but you can use third-party apps like Rectangle or Magnet to add this feature. These apps let you assign keyboard combinations to snap windows to specific areas of your screen, similar to Windows. Rectangle is free and works well for basic split-screen tasks.

Troubleshoot windows that won't snap to the edge

If dragging a window to the edge does not snap it, the window might be in fullscreen mode. Exit fullscreen by pressing F11 or looking for a fullscreen button in the app's menu. Some older applications do not support snapping because they were built before this feature existed. For these apps, you can manually resize them by dragging the window border, though this takes longer than snapping.

On Windows, check that Snap is turned on by opening Settings, going to System, then Multitasking, and making sure "Snap windows" is toggled on. If it is already on but snapping still does not work, restart your computer. On Mac, make sure you are using a recent version of macOS, as older versions have limited split-screen support.

Frequently Asked Questions

Can I split my screen into more than two windows at once?

Yes, but only on Windows 11 with Snap Layouts. You can arrange up to four windows in a grid, or three windows with one taking up two-thirds of the screen. On Windows 10 and Mac, you can only snap two windows side by side, but you can use virtual desktops to create multiple split-screen setups and switch between them.

What happens to a snapped window if I unplug an external monitor?

If you are using an external monitor and unplug it, Windows moves the snapped windows back to your laptop screen and stacks them on top of each other. You will need to re-snap them or resize them manually. To avoid this, use your laptop screen as your primary display for split-screen work.

Can I save a split-screen layout so it opens the same way every time?

Windows does not save split-screen layouts automatically, but you can use third-party tools like WindowGrid or Actual Multiple Monitors to save and restore custom window arrangements. On Mac, you can use apps like Moom or Divvy for the same purpose. These apps remember your layout and restore it with a keyboard shortcut.

Does split-screen slow down my computer?

Split-screen itself does not use extra processing power, but running two demanding applications at once will use more resources than running one. If your computer slows down when you split-screen, close unnecessary background apps or reduce the resolution of one window to free up memory.

Can I split my screen vertically instead of horizontally?

The built-in snap features on Windows and Mac only split horizontally (left and right). To split vertically (top and bottom), use a third-party app like Rectangle on Mac or FancyZones on Windows. FancyZones is free and lets you create custom grid layouts, including vertical splits.