Age Calculator

This age calculator has been designed to calculate your current age based on the input provided in the ‘Date of Birth’ field. Alternatively, you can enter a date of your choice in the ‘Age at the Date‘ field to know your age at that particular point in time.. The calculated age will be displayed in years, months, days, hours, minutes, and seconds.

About The Age Calculator

Our age calculator is a versatile tool designed to help you determine your current age based on your date of birth. Simply enter your birthdate in the ‘Date of Birth’ field, and the calculator will provide your age in years, months, and days. If you want to know your age at a specific past or future date, you can enter that date in the ‘Age at the Date’ field.

This calculator is also useful for determining the age of various objects or historical sites. For example, you can use it to find out how long a historical monument has been standing or the age of a collectible item by entering the date the item was acquired or the monument was completed.

How to Use the Age Calculator

1. By default, the calculator will display today’s date in the ‘Age at the Date‘ field and a date 20 years back from the current date in the ‘Date of Birth’ field.
2. To find out your current age or the age of an object, enter your birthdate (or the start date for an object) in the ‘Date of Birth’ field and leave the ‘Age at the Date’ field unchanged.
3. To find out how old you were or will be at a specific date, fill in the ‘Date of Birth’ field with your birthdate and enter the desired date in the ‘Age at the Date’ field.
4. You can tap on the year in the calendar control to quickly change the year value. Similarly, you can tap on the month to select the month
5. Click the ‘Calculate‘ button to see the result.
6. Click the  ‘Reset‘ button to reset the calculator to default values.

Understanding the Output

The result page of the calculator is divided into two sections:

1. First Line: Shows the age in years, months, and days.
2. Remaining Lines: Provides the age in other formats, including months and days, weeks and days, or just days, hours, minutes, and seconds.

How the Age Calculator Works

Our calculator uses the Gregorian calendar, the most widely used calendar system worldwide. Here’s how it works:

• Gregorian Calendar Basics: A standard year in the Gregorian calendar has 365 days, while a leap year has 366 days. The year is divided into 12 months of varying lengths: January, March, May, July, August, October, and December each have 31 days; April, June, September, and November have 30 days; and February has 28 days in a common year and 29 days in a leap year.
• Age Calculation: Age is calculated by counting full years, months, and days from the date of birth. A person is considered to be one year old only after 12 months have passed since their birthdate. Similarly, the calculator adds one year to the age for every 12-month period completed.

Additional Uses for the Age Calculator

The calculator serves multiple purposes beyond personal age calculation. Common applications include:

Chronological Age Calculator

Chronological age measures the exact time elapsed since birth in years, months, and days. This calculation provides a standard measure used in medical records, educational institutions, and official documentation. The calculator determines precise chronological age between any two dates, useful for both record-keeping and age verification purposes.

Baby Age in Years, Months, Weeks and Days

For infant and child age calculations, the tool provides measurements in years, months, weeks, and days. This precise measurement assists healthcare providers and parents in tracking developmental milestones and maintaining accurate health records. The calculator’s month and week measurements are particularly relevant for monitoring early childhood development stages.

Pets Age Calculator

This age calculator is not limited to calculating human age; it can also be used as a Pets Ages Calculator. For example, if you’re tracking a pet’s age, such as a puppy’s growth, you can use it as a puppy age calculator in weeks or months to see exactly how old your furry friend is, making it easier to manage vaccinations, diet changes, and growth milestones. This flexibility makes the calculator a helpful tool for pet owners looking to track their pets’ growth and development over time.

Calculate Age in Past or Future e.g How Old was I on date

Additionally, if you want to calculate your age at different points in your life, like a specific past birthday or another memorable date, you can use the ‘Age at the Date’ feature in the calculator to answer questions such as “how old was I on” any chosen day in history. This tool can help you explore both personal and historical timelines in exact detail.

Calculate Age of Historical monuments or events.

In addition to personal use, this calculator can also serve educational and historical purposes. For example, you can determine the age of a historical monument by entering its completion date to see how many years, months, or days it has been standing. Similarly, if you have a collectible item, you can use the tool to calculate its age from the acquisition date, offering a detailed perspective on its historical significance.

Reviewed By

Dr Adeela Mohyuddin

Consultant Radiologist, MCPS, FRCR, MMED

Doctor Adeela Mohyuddin is an exceptionally capable and experienced radiologist who specializes in breast and musculoskeletal radiology. She is proficient in MRI and CT scanning technology, as well as breast imaging, X-rays, fluoroscopy, and ultrasounds. She is a Fellow of the Royal College of Radiology (UK) and currently works within the UK's National Health Service (NHS).