Quick way: open the Roblox game’s Customize/Avatar menu, then look for Build , Body , or Scale/Height and move the slider until your character is the size you want.

In Gym-style Roblox games

  • Some games let you change size through the avatar editor, where you adjust height and body proportions.
  • In some gym games, size is changed with an in-game menu icon near your strength or stats display, not the regular Roblox avatar editor.
  • If the game has a Customization or Attributes section, that may be where height or size is controlled.

Try this order

  1. Open the game’s menu.
  2. Check Customize , Avatar , or Settings.
  3. Look for Build , Scale , Height , or Body Size.
  4. Move the slider and save changes if needed.

If it does not work

Some Roblox games lock size changes behind game-specific features, so the normal avatar editor may not affect your in-game size. In that case, the size change only works if the game itself includes a size-setting option.

TL;DR: Use the game’s customization menu first, then look for Build/Scale/Height sliders; if the game is a gym game, size may be controlled by a special in-game button instead of the standard avatar editor.