To throw a grenade in Starfield on Xbox, follow these steps:
- Open your Inventory and go to the Throwables section.
- Equip the grenade or other explosive you want to use.
- Return to the game and aim your crosshair where you want to throw.
- Press the RB button on your Xbox controller to throw the grenade.
Throwables in Starfield follow an arc trajectory, so aim slightly above the target to account for gravity. A trajectory arc can be unlocked with the Demolition Skill, which also improves explosion radius and damage. This is the basic method to throw grenades on Xbox while playing Starfield.