Prince Charles is the eldest son of Queen Elizabeth II and therefore is the heir apparent to the British throne. He has been the Duke of Cornwall and Duke of Rothesay since 1952.
Prince William is in second place in line for the throne, right behind his father, Prince Charles. He might even take the throne instead of Prince Charles, who is already 70 years old.
Prince George is third in line to the throne, although he might not yet be able to really grasp what his responsibilities are going to be in the future.
Prince George's little sister, Princess Charlotte, is fourth in line of the British throne.
The little Louis might be the youngest member of the royal family, but he also took on the fifth place in the line of succession for the British throne when he was born on April 23rd of 2018.
Prince William's younger brother, Prince Harry, used to be ranked third in the line of succession. After the birth of his two nephews and niece, however, he has been "demoted" to the sixth place by now.
Although Prince Andrew is the second son of Queen Elizabeth II, he is only seventh in the line of succession.
The eldest daughter of Prince Andrew, Princess Beatrice of York, is eighth in line to the throne - right after her father.
Princess Eugenie is the youngest daughter of Prince Andrew and Sarah. Therefore, she is ninth in line of succession to the British throne.
As the youngest son of the British Queen, Prince Edward ends up on the tenth place of succession.