How do I convert selected text to uppercase?

Explanation

In visual mode, pressing U converts all selected text to uppercase. This is a quick way to change the case of a selection.

How it works

• Select text with v, V, or <C-v>
• Press U to convert to uppercase
• The selection is deselected after the conversion

Example

hello world

Select hello world with V, press U:

HELLO WORLD

Tips

• u in visual mode converts to lowercase
• ~ in visual mode toggles the case
• gU{motion} uppercases without visual mode (e.g., gUiw)
• gu{motion} lowercases without visual mode
• Works with all visual mode types including block mode