Age Calculator
Find your exact age in years, months, days and total elapsed days.
Instructions: Age Calculator
Follow these steps to get a reliable result without unnecessary setup.
- 1
Select the date of birth and the date on which you want the age calculated.
- 2
Choose the options in Age Calculator that match your intended output, such as units, format, mode, range or quality when those controls are available.
- 3
Run Age Calculator and review the displayed result, preview or validation message before proceeding.
- 4
Check the entered units, dates, decimal placement and any assumptions before relying on the result.
- 5
Use the available reset, copy or download action in Age Calculator when you are satisfied with the result; only actions supported by this tool are shown.
About this tool: Age Calculator
Calculate age between a date of birth and a chosen target date using calendar-aware year, month and day differences, plus total elapsed days.
Use it to compare scenarios quickly while keeping the relevant values, units, dates or rates visible on one page.
Age Calculator is presented in the shared NexterHub tool layout so the working controls stay near the top while the method, example, limitations and related utilities remain available below the result.
How it works
Calendar arithmetic subtracts complete years and months first, then remaining days; total days are also calculated from the date interval.
Practical example
DOB 1 Jan 2000 and target date 1 Jan 2026 gives 26 years.
Important notes
Check the entered units, dates, decimal placement and any assumptions before relying on the result.
Privacy & processing
The calculation is performed in the browser from the values you enter.
Frequently asked questions
What does Age Calculator do?
Find your exact age in years, months, days and total elapsed days.
How do I use Age Calculator?
Start with the main input step: Select the date of birth and the date on which you want the age calculated. Then choose any relevant options, run the tool and review the result.
How does Age Calculator calculate or process the result?
Calendar arithmetic subtracts complete years and months first, then remaining days; total days are also calculated from the date interval.
What should I check before using a result from Age Calculator?
Check the entered units, dates, decimal placement and any assumptions before relying on the result.
Does Age Calculator send my input to a NexterHub server?
The calculation is performed in the browser from the values you enter.
Can I use Age Calculator on a phone or tablet?
Yes. Age Calculator uses the responsive NexterHub tool layout, so controls and results adapt to smaller touch screens.