About Birthday & Age

Birthday & Age was built with one simple goal: make date and age calculations instant, accurate, and completely free for everyone - no sign-up, no clutter, no confusing forms.

What we offer

Our growing suite of calculators covers everything from your exact age and days until your next birthday, to zodiac signs, leap years, work experience, and relationship anniversaries. Every tool runs entirely in your browser, so your dates are never stored or transmitted anywhere.

Our commitment to accuracy

Date math looks simple on the surface, but leap years, varying month lengths, and edge cases can easily throw off a naive calculation. We built every calculator on this site to handle those cases correctly, so you can trust the numbers.

Free, and always will be

Birthday & Age is supported by unobtrusive advertising, which lets us keep every calculator on the site completely free to use, forever.