**Introduction**

Calculating the birth year from a given age can be a useful task, especially when dealing with demographic data or age verification processes. In this article, we’ll introduce a simple and efficient Birth Year Calculator using HTML and JavaScript.

**How to Use**

To use the Birth Year Calculator, follow these steps:

- Enter the age in the provided input field.
- Click the “Calculate” button to obtain the birth year.

**Formula**

The formula for calculating the birth year from age is straightforward:

$Birth Year=Current Year−Age$

This formula subtracts the entered age from the current year, providing the birth year.

**Example**

Suppose you have an age of 25. Using the Birth Year Calculator:

$Birth Year=2024−25=1999$

Thus, the birth year would be 1999.

**FAQs**

**Q: Is the formula accurate for any age?**

A: Yes, the formula is accurate for any positive integer age.

**Q: Can I use decimal values for age?**

A: The calculator accepts only whole numbers as ages. Decimal values will be rounded to the nearest whole number.

**Q: What happens if I enter a negative age?**

A: The calculator assumes a positive age. Negative values will result in an error.

**Conclusion**

In conclusion, the Birth Year Calculator is a simple yet powerful tool for determining birth years based on age. Whether you’re working with age verification or simply curious about someone’s birth year, this calculator provides a quick solution.