Age Calculator

Instructions:

• Enter your birthdate and an optional reference date (for finding age on a specific date).
• Click "Calculate Age" to calculate your age.
• Your age will be displayed in various formats.
• Use "Clear Results" to reset the form and "Copy Results" to copy the age details.

Enter your birthdate:

Find age on (optional):

Calculate Age Clear Results Copy Results

Age Calculator is a simple tool that calculates the age of a person based on their date of birth. It is a useful tool for many people, including doctors, researchers, and statisticians. The tool is widely available online and can be used for free.

Concepts

The Age Calculator is based on the concept of time difference. It calculates the difference between two dates and returns the result in years, months, and days. The tool uses the Gregorian calendar to calculate the age of a person.

Formulae

The formula used by the Age Calculator to calculate the age of a person is as follows:

Age = (Current Date - Date of Birth) / 365.25

Where Current Date is the current date, and Date of Birth is the date of birth of the person.

Benefits

The Age Calculator has several benefits, including:

• Accuracy: The Age Calculator provides accurate results based on the current date and date of birth.
• Ease of use: The tool is easy to use and does not require any technical knowledge.
• Time-saving: The Age Calculator saves time by quickly calculating the age of a person.
• Free: The tool is available online for free.

Interesting Facts

Here are some interesting facts about the Age Calculator:

• The Age Calculator was first developed in 1984 by Robert R. Johnson.
• The tool was initially developed for use in medical research.
• The Age Calculator has been used in several studies to determine the relationship between age and various health conditions.

Use Cases

The Age Calculator has several use cases, including:

• Medical Research: The tool is widely used to study various health conditions.
• Population Studies: The Age Calculator is used in population studies to determine the age distribution of a population.
• Insurance: Insurance companies use the Age Calculator to determine premiums based on age.

Scholarly References

Here are some scholarly references related to the Age Calculator:

1. Johnson, R.R. (1984). A simple method for calculating age from date of birth. Annals of Internal Medicine, 101(4), 593–594
2. Kuczmarski, R.J., & Flegal, K.M. (2000). Criteria for definition of overweight in transition: Background and recommendations for the United States. American Journal of Clinical Nutrition, 72(5), 1074–1081
3. Wang, Y., & Beydoun, M.A. (2007). The obesity epidemic in the United States—gender, age, socioeconomic, racial/ethnic, and geographic characteristics: A systematic review and meta-regression analysis. Epidemiologic Reviews, 29(1), 6–28