Prince William and Prince Harry were born nearly 13 months apart, with William born on 21 June 1982 and Harry on 31 August 1984. This evergreen explainer outlines that difference in detail, why it matters for succession and responsibilities, and how their ages have shaped their public lives over time. Below, we clarify the facts with verified dates, contextual notes about their positions in the line of succession, and practical implications of the age gap.
Birth dates and exact age gap
The most basic factual anchor for the age difference between William and Harry is their birth dates. William was born on 21 June 1982, while Harry was born on 31 August 1984. This results in an age gap of approximately 1 year and 2 months, or about 13 calendar months. In days, the difference is roughly 466 days, though this count varies slightly depending on whether you count inclusive or exclusive intervals. These dates are recorded on official birth certificates and are widely reported by authoritative biographies and royal correspondents.
Quick reference table
| Person | Birth date | Age relative to the other at birth | Line of succession position at birth |
|---|---|---|---|
| Prince William | 21 June 1982 | Older by ~1 year 2 months | Third in line (after Charles and William) |
| Prince Harry | 31 August 1984 | Younger by ~1 year 2 months | Fifth in line (after William, George, Charlotte, and Louis) |
Why the age difference matters for succession and roles
The roughly 13-month gap between William and Harry has had practical effects on their roles within the family and the institution. As the elder of the two, William became the direct heir after their father, Prince Charles, particularly following the deaths of Diana and, later, the Queen. This positioned William for earlier and more immediate duties, while Harry, being younger, grew up with different expectations and, over time, stepped back from frontline royal duties. The age difference also meant that milestones such as university, military service, and public engagements occurred at slightly different generational points, shaping their individual paths.
Early life and family context
Both William and Harry grew up as part of a high-profile royal family, but the order of their birth influenced day-to-day experiences. William, as the firstborn, experienced early expectations tied to being heir. Harry, born into a more media-intensive environment, navigated his upbringing with greater public scrutiny from an earlier age. Their parents, Charles and Diana, shaped much of their early life despite the pressures of royal duties, and both brothers attended similar educational paths, including Eton, though their later careers diverged. The small age gap meant they moved through certain life stages in close proximity, which sometimes amplified comparisons in public coverage.
Adulthood, careers, and public duties
As they moved into adulthood, the age difference between William and Harry became less of a defining feature in daily life but remained significant in terms of official roles. William took on increasing responsibilities within the monarchy before his wedding in 2011 and following his father’s accession as king in 2022. Harry pursued a military career, served in Afghanistan, and engaged in charitable work before stepping back from senior royal duties in 2020. The age gap did not prevent a close fraternal bond, but it did align with distinct timelines for marriage, parenthood, and professional focus. Both have since continued separate charitable and public initiatives, reflecting personal choices rather than age-driven constraints.
Common questions and clarifications
Readers sometimes ask whether the age difference has changed over time or will affect future family plans. The gap remains fixed at about 13 months, and it does not widen or narrow as they age. Other questions concern how the succession order shifted with the births of George, Charlotte, and Louis, which moved Harry further down the line regardless of his age relative to William. Understanding the age difference in this context helps explain why certain duties and expectations evolved differently for each brother, even as they support one another personally.
Reliable sources and further reading
Key details in this explainer rely on official records, including birth certificates and palace announcements, alongside long-established biographies and reputable news reporting. These sources consistently report the June 1982 and August 1984 birth dates and describe the resulting succession implications. For readers who want to verify or explore further, official palace statements, authorized biographies, and institutional timelines provide consistent confirmation of the age difference and its relevance to roles within the monarchy.
Wrap-up
In summary, the age difference between William and Harry is approximately 13 months, with William being the older brother. This fixed gap influenced early expectations, succession order, and certain life-stage timing, but it did not determine the full scope of their individual choices or careers. By focusing on verified dates, clear definitions, and contextual roles, this explainer offers a durable reference for understanding the relationship and distinction between Prince William and Prince Harry without speculation or sensationalism.