Core Metamagic
The list below contains Metamagic available to the 2024 PHB.
Careful Spell
Cost: 1 Sorcery Point
When you cast a spell that forces other creatures to make a saving throw, you can protect some of those creatures from the spell's full force. To do so, spend 1 Sorcery Point and choose a number of those creatures up to your Charisma modifier (minimum of one creature). A chosen creature automatically succeeds on its saving throw against the spell, and it takes no damage if it would normally take half damage on a successful save.
Distant Spell
Cost: 1 Sorcery Point
When you cast a spell that has a range of at least 5 feet, you can spend 1 Sorcery Point to double the spell's range. Or when you cast a spell that has a range of Touch, you can spend 1 Sorcery Point to make the spell's range 30 feet.
Empowered Spell
Cost: 1 Sorcery Point
When you roll damage for a spell, you can spend 1 Sorcery Point to reroll a number of the damage dice up to your Charisma modifier (minimum of one), and you must use the new rolls.
You can use Empowered Spell even if you've already used a different Metamagic option during the casting of the spell.
Extended Spell
Cost: 1 Sorcery Point
When you cast a spell that has a duration of 1 minute or longer, you can spend 1 Sorcery Point to double its duration to a maximum duration of 24 hours.
If the affected spell requires Concentration, you have Advantage on any saving throw you make to maintain that Concentration.
Heightened Spell
Cost: 2 Sorcery Points
When you cast a spell that forces a creature to make a saving throw, you can spend 2 Sorcery Points to give one target of the spell Disadvantage on saves against the spell.
Quickened Spell
Cost: 2 Sorcery Points
When you cast a spell that has a casting time of an action, you can spend 2 Sorcery Points to change the casting time to a Bonus Action for this casting. You can't modify a spell in this way if you've already cast a level 1+ spell on the current turn, nor can you cast a level 1+ spell on this turn after modifying a spell in this way.
Seeking Spell
Cost: 1 Sorcery Point
If you make an attack roll for a spell and miss, you can spend 1 Sorcery Point to reroll the d20, and you must use the new roll.
You can use Seeking Spell even if you've already used a different Metamagic option during the casting of the spell.
Subtle Spell
Cost: 1 Sorcery Point
When you cast a spell, you can spend 1 Sorcery Point to cast it without any Verbal, Somatic, or Material components, except Material components that are consumed by the spell or that have a cost specified in the spell.
Transmuted Spell
Cost: 1 Sorcery Point
When you cast a spell that deals a type of damage from the following list, you can spend 1 Sorcery Point to change that damage type to one of the other listed types: Acid, Cold, Fire, Lightning, Poison, Thunder.
Twinned Spell
Cost: 1 Sorcery Point
When you cast a spell, such as :spell--level-1: Charm Person, that can be cast with a higher-level spell slot to target an additional creature, you can spend 1 Sorcery Point to increase the spell's effective level by 1.