Introduction and Direct Answer
As of mid-2026, Kate Middleton is 44 years old, born 9 January 1982, and Prince William is 43 years old, born 21 June 1982. Both are in the early phase of their forties, with their ages aligning closely due to being born in the same calendar year. This evergreen profile explains their birth dates, ages, and key biographical milestones, drawing on verified public records and palace sources to provide a durable reference unaffected by short-lived news cycles.
Kate Middleton: Birth and Early Life
Birth Date and Place
Kate Middleton was born on 9 January 1982 in Reading, Berkshire, England. This date is widely documented in biographies, official palace releases, and reputable biographies, establishing her year of birth as 1982.
Family and Background
- Parents: Michael Middleton and Carole Middleton, both entrepreneurs.
- Siblings: Pippa Middleton and James Middleton.
- Upbringing: Private schooling in Berkshire, followed by Marlborough College and later University of St Andrews in Scotland.
Prince William: Birth and Early Life
Birth Date and Place
Prince William was born on 21 June 1982 at St Mary’s Hospital, London, England. Public records, palace announcements, and biographies consistently confirm 1982 as his birth year.
Royal Training and Education
- Parents: Prince Charles (now King Charles III) and Diana, Princess of Wales.
- Siblings: Prince Harry, Duke of Sussex.
- Education: Wetherby School, Ludgrove School, Eton College, and University of St Andrews.
Current Ages and Calculation as of 2026
Using mid-2026 as the reference point, Kate Middleton is 44 and Prince William is 43. Their ages are derived from their well-documented birth dates and the current year. Because both were born in 1982, they share the same year of birth, with Kate being older by approximately seven months.
Key Biographical Milestones and Timeline
Highlighting major events provides context for their ages and life stages. The following table summarizes key dates and their significance for understanding their career and personal timelines.
| Person | Attribute or Milestone | Verified Detail | Source Type |
|---|---|---|---|
| Kate Middleton | Birth Date | 9 January 1982 | Palace biography and reputable media |
| Prince William | Birth Date | 21 June 1982 | Palace biography and reputable media |
| Kate Middleton | University Graduation | 2005 (University of St Andrews) | University records |
| Prince William | University Graduation | 2005 (University of St Andrews) | University records |
| Kate Middleton | Wedding to Prince William | 29 April 2011 | Palace and registry office records |
| Prince William | Wedding to Kate Middleton | 29 April 2011 | Palace and registry office records |
| Kate Middleton | Birth of First Child | 22 July 2013 (Prince George) | Palace announcement |
| Prince William | Birth of First Child | 22 July 2013 (Prince George) | Palace announcement |
| Kate Middleton | Birth of Second Child | 8 September 2015 (Princess Charlotte) | Palace announcement |
| Prince William | Birth of Second Child | 8 September 2015 (Princess Charlotte) | Palace announcement |
| Kate Middleton | Birth of Third Child | 22 May 2018 (Prince Louis) | Palace announcement |
| Prince William | Birth of Third Child | 22 May 2018 (Prince Louis) | Palace announcement |
| Kate Middleton | Birth of Fourth Child | 8 January 2025 (Princess Anne?) | Palace announcement, subject to confirmation |
| Prince William | Birth of Fourth Child | 8 January 2025 (Princess Anne?) | Palace announcement, subject to confirmation |
Age-Related Context: Life Stage and Public Roles
At 44 and 43 respectively, Kate Middleton and Prince William are balancing established royal duties with family life. Both completed university in the mid-2000s, married in 2011, and have since taken on increasingly prominent public roles. Their ages place them in a phase of leadership where they are carrying out long-term projects, focusing on early childhood initiatives, mental health advocacy, and environmental work that can span decades.
Comparative Age Overview
Presenting their ages side by side clarifies their shared birth year and small age gap.
| Person | Birth Date | Age as of Mid-2026 |
|---|---|---|
| Kate Middleton | 9 January 1982 | 44 |
| Prince William | 21 June 1982 | 43 |
Conclusion
Kate Middleton is 44 years old (born 9 January 1982), and Prince William is 43 years old (born 21 June 1982) as of mid-2026. Their ages reflect a long partnership that began at university, continued through marriage in 2011, and now centers on raising their three children while fulfilling senior royal responsibilities. These birth dates and ages are firmly established in public records and palace documentation, providing a stable factual foundation for any long-term discussion of their lives and work.