Age in Years Calculator
Convert age in years to months, weeks, and days. Free age calculator with multiple conversions.
About This Calculator
Convert age in years to months, weeks, and days. Free online age calculator with multiple time unit conversions for birthdays and milestones.
This free online calculator is part of Calculys comprehensive tool suite. Results update instantly and can be shared via URL.
How It Works
Enter your values and click Calculate. The tool uses validated formulas to compute accurate results with interactive charts and a detailed breakdown table.
Frequently Asked Questions
How is age calculated?
Age = current year - birth year. This calculator converts years to months (x12), weeks (x52.1775), and days (x365.25).
What is the exact age calculation?
For precise age: subtract birth date from today. This calculator uses average values for approximation.
How many days in a year?
365 days normally, 366 in leap year. Average: 365.25 days.
What is the oldest documented age?
Jeanne Calment: 122 years 164 days (44,724 days). Currently, the oldest verified living person is ~117 years.
What is the life expectancy globally?
Global average: ~72 years (2024). Varies by country: Japan ~84, India ~70, US ~77, UK ~81.