Calculate Age by Date of Birth
Calculate calendar age and totals between a birth date and another date.
Use the tool
Start the interactive tool on the main PDF Engine page. Selected files are processed in your browser for supported operations.
How to use Age Calculator
- Choose the date of birth.
- Choose the date to calculate age at, or keep the default date.
- Read the age in years, months, days and total time units.
When it is useful
Get a quick calendar-age estimate for forms, planning and everyday calculations.
Important limitations
This is a convenience calculator, not proof of legal eligibility. Official requirements may define age and dates differently by jurisdiction.
Privacy and file handling
This tool is designed to process supported files locally in your browser; the static website does not provide server-side file storage. Your browser still downloads the JavaScript libraries required for some operations from third-party content delivery networks. See the Privacy Policy for details. Do not use the output without checking it, and keep your original file.
Frequently asked question
The calculator uses calendar months and dates; check official rules for legal, school or employment eligibility.
Read the age calculator guide for step-by-step instructions, tips, and limitations.
Read the age calculator guide for step-by-step instructions, tips, and limitations.
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