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35 yr

Age Calculator

100% Free

Calculate your exact age in years, months, and days from any birth date — plus next birthday countdown.

Exact to the Day
Birthday Countdown
Next Birthday
Client-Side

Enter your date of birth

Default is today

Your Age

Exact Age
36yrs4mo2d
Total Days13,271
Total Weeks1,895
Total Months436
Next Birthday2026-12-31 (in 243 days)
Your Generation
☕
Millennial
Raised on dial-up, built the internet age

Embed This Tool

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Add Age Calculator to your website or blog in seconds.

  • Responsive design
  • Lightweight & fast
  • No backend required
  • Always up-to-date 
<iframe
  src="https://tools.town/embed/age-calculator/"
  width="100%"
  height="600"
  style="border:none; border-radius:12px;"
  loading="lazy"
  title="Age Calculator">
</iframe>

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Share Age Calculator with anyone — no login required.

  • Shareable link
  • No login required
  • Works on any device
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How to Use

  1. 1 Enter your date of birth using the date picker
  2. 2 Optionally change the 'Calculate As Of' date — it defaults to today
  3. 3 Your exact age in years, months, and days appears instantly
  4. 4 Scroll down to see total days, weeks, months, and your next birthday countdown

Features

  • Exact age in years, months, and days
  • Total days, weeks, and months elapsed since birth
  • Next birthday date and countdown in days
  • Supports any 'as of' target date — not just today
  • Reset to Today button for quick recalculation
  • 100% browser-based — no personal data sent to any server

Why it Matters

Whether you need your precise age for a visa form, medical record, school admission, or just curiosity, an exact calculation avoids the common mistake of off-by-one errors when a birthday hasn't occurred yet this year. This calculator handles all the edge cases correctly.

★★★★★

Use Cases

Visa & Legal Forms

Get your exact age for official documents and applications

School Admissions

Verify age eligibility for school cut-off dates

Medical Records

Confirm exact age for healthcare and insurance forms

Birthday Planning

Find out exactly how many days until the next birthday

Frequently Asked Questions

Does it calculate age as of today?
Yes, by default. But you can also set a custom target date — useful for calculating age on a past or future date.
How are months counted?
Calendar months. For example, 31 Jan to 28 Feb is exactly 1 month regardless of the number of days in each month.
Is there a limit on the birth date?
No. You can enter any past date. The calculator handles historical dates correctly.
Is anything sent to a server?
No. All calculations run entirely in your browser.

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