How Old Is Prince William – 2025 Age and Family Details

Prince William, the elder son of King Charles III and heir apparent to the British throne, was born on 21 June 1982. As of June 2025, he is 43 years old. His age places him in the middle of a long wait to become king, while his own children are growing into their roles in the line of succession. This article provides a clear, fact-based breakdown of William’s age, his birthday, and the ages of his wife, children, and brother.

William turned 43 on 21 June 2025. He is married to Catherine, Princess of Wales, formerly Kate Middleton, who was born on 9 January 1982 and is also 43. Together they have three children: Prince George, Princess Charlotte, and Prince Louis. William’s age is a matter of public record and is routinely updated in biographies and official sources.

For readers interested in other members of the royal family, a related article on Sarah Ferguson Net Worth – Latest Estimates and Key Insights offers additional context. And for those who follow age-related biographical content, How Old Is Donald Trump – Exact Age and Key Milestones follows a similar format.

How Old Is Prince William?

Prince William is 43 years old as of June 2025. He turned 43 on 21 June 2025, which was his birthday. This is the most direct answer to the question, and it is based on his publicly verified birthdate of 21 June 1982, as recorded by Wikipedia and Britannica.

• Prince William turned 43 on 21 June 2025, making him the same age as his wife Catherine, who was born in January 1982.
• He is two years older than his brother Prince Harry, who was born in September 1984 and is 40 in 2025.
• His children span ages 12, 10, and 7 as of mid-2025.
• As heir apparent, William’s age is often compared to historical succession ages; his father Charles turned 76 in November 2025.
• The age of the heir to the throne is a recurring topic in discussions about the monarchy’s future timeline.

When Was Prince William Born?

Prince William was born on 21 June 1982 at St Mary’s Hospital in Paddington, London, according to the Official Royal Family website. His full name is William Arthur Philip Louis. He is the elder son of King Charles III and the late Diana, Princess of Wales.

Prince William’s Date of Birth in Context

William’s birthdate of 21 June 1982 is one of the most well-documented dates in modern royal biography. It places his birth in the early 1980s, a decade that also saw the births of his brother Harry (1984) and his future wife Catherine (1982). His birthday falls in midsummer, and he often spends it privately with family.

How Old Is Prince William in 2025?

In 2025, William is 43 years old. This is calculated directly from his birthdate: from 21 June 1982 to 21 June 2025 is exactly 43 years. There is no ambiguity in this figure; it is a matter of simple arithmetic based on a verified public record.

How Old Is Prince William’s Wife, Kate Middleton?

Catherine, Princess of Wales, commonly known as Kate Middleton, was born on 9 January 1982. As of 2025, she is 43 years old. This makes her the same age as Prince William, though she is approximately five months older in calendar terms. Her birth name is Catherine Elizabeth Middleton, as noted by Britannica.

How Old Is Prince William and Princess Kate Together?

Both William and Kate are 43 in 2025. They married on 29 April 2011, when William was 28 and Kate was 29. Their age proximity is often noted in biographical profiles, and they share the same birth year, which is relatively unusual for a royal couple.

How Old Are Prince William’s Children?

William and Kate have three children: Prince George, Princess Charlotte, and Prince Louis. Their ages in 2025 are based on publicly recorded birthdates from ABC News and other major outlets.

Prince George’s Age

Prince George, full name George Alexander Louis, was born on 22 July 2013. He turned 12 on 22 July 2025. He is second in line to the throne, behind his father William.

Princess Charlotte’s Age

Princess Charlotte, full name Charlotte Elizabeth Diana, was born on 2 May 2015. She turned 10 on 2 May 2025. She is third in line to the throne.

Prince Louis’s Age

Prince Louis, full name Louis Arthur Charles, was born on 23 April 2018. He is 7 years old as of mid-2025 and will turn 8 on 23 April 2026. He is fourth in line to the throne.

How Old Is Prince William Compared to Prince Harry?

Prince William is the elder brother of Prince Harry, Duke of Sussex. Harry was born in September 1984, making him approximately two years younger than William. As of 2025, Harry is 40 years old. The age gap between the brothers is often highlighted in biographical comparisons, especially regarding their different life paths and royal duties.

How Old Is Prince Harry?

Prince Harry was born on 15 September 1984, according to Wikipedia. He is 40 years old in 2025. This makes William two years and three months older than Harry.

How Old Is King Charles Compared to Prince William?

King Charles III, William’s father, was born on 14 November 1948. He is 76 years old in 2025. This means there is a 33-year age gap between Charles and William. William became heir apparent when Charles became king on 8 September 2022, following the death of Queen Elizabeth II.

How Old Was Prince William at Key Life Events?

Understanding William’s age at major milestones provides context for his biography. Below is a timeline of key events with his age at each.

1. 1982, age 0 — Born 21 June at St Mary’s Hospital, London.
2. 1997, age 15 — His mother Diana died in a car crash in Paris.
3. 2011, age 28 — Married Catherine Middleton on 29 April at Westminster Abbey.
4. 2013, age 31 — Birth of his first child, Prince George.
5. 2015, age 32 — Birth of Princess Charlotte.
6. 2018, age 35 — Birth of Prince Louis.
7. 2022, age 40 — Became Prince of Wales after the death of Queen Elizabeth II and the accession of King Charles III.
8. 2025, age 43 — Current age as of June 2025.

For additional perspective on age and life milestones, the article How Old Is Donald Trump – Exact Age and Key Milestones follows a similar approach to biographical age reporting.

What Information About Prince William’s Age Is Certain and What Remains Unclear?

The question of Prince William’s age is straightforward, but it is useful to separate established facts from areas where users may seek clarification.

Why Age Matters in the Royal Line of Succession

William’s age places him in the middle of a long waiting period as heir apparent. His father, King Charles III, turned 76 in 2025, and the next succession is not expected in the near term. This means William’s age is a key data point for understanding the generational timeline of the monarchy.

His children’s ages also matter. Prince George turned 12 in July 2025, and as second in line, his age determines when he might begin taking on more public duties. Princess Charlotte and Prince Louis are also growing into their roles as working members of the royal family in the future.

Comparisons to Prince Harry often surface due to their sibling dynamic and different life paths. Harry, at 40, is building a life in the United States, while William remains in the UK, preparing for a future reign. Their age gap of two years is small, but their public roles are now very different.

What Are the Authoritative Sources for Prince William’s Age?

The most reliable sources for Prince William’s age and birthdate are official and encyclopedic references. Below are key quotes from these sources.

“William, Prince of Wales (born 21 June 1982) is the heir apparent to the British throne.”

— Wikipedia

“William, prince of Wales (born June 21, 1982, Paddington, London, England) is the elder son of Charles III.”

— Britannica

“The Prince of Wales was born at St Mary’s Hospital, Paddington, London, on 21 June 1982.”

— Official Royal Family website

Additional coverage from BBC News and USA Today reinforces these facts. The USA Today piece, while dated March 2024, provides a useful family age reference that is updated periodically.

Summary: Prince William’s Age at a Glance

Prince William is 43 years old as of June 2025, born on 21 June 1982. His wife Kate is also 43, and their three children are aged 12, 10, and 7. His brother Harry is 40, and his father King Charles is 76. These ages are all publicly recorded and verifiable. The next age milestone for William is his 44th birthday on 21 June 2026. For readers interested in the broader financial context of the royal family, the article on Sarah Ferguson Net Worth – Latest Estimates and Key Insights provides related information.

Frequently Asked Questions About Prince William’s Age