Date of Birth Calculator: Age Calculator with Zodiac Signs

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Here is the most accurate and easy to use date of birth calculator. The best age calculator which tells your exact age in years, months, weeks and days.

Date of Birth Calculator

📅 Date of Birth Calculator

Calculate age, find birth dates, and discover zodiac signs

Enter Date of Birth

Age in Years (e.g., 32.4 = 32 years 4 months)

As of Date (Reference)

Date of Birth

Calculate Age On

💡 Tip: All calculations are precise to the day. Your data stays private and is never stored.

Now you have calculated the age or the date of birth of yours or your loved one and you may want to wish a happy birthday. Then use our birthday wishes generator which will help you create amazing birthday wishes.

Features Included

This amazing and easy to use age calculator includes the following features:

1. Calculate Age

Enter birth date to get exact age with years, months, days, total days/ weeks/ months, next birthday countdown and zodiac sign.

2. Find Birth Date

Here you can add the age in decimal points to calculate their approximate date of birth. For example:

32.4 = 32 years and 4 months
25.11 = 25 years and 11 months
50.6 = 50 years and 6 months

3. Age on Specific Date

Calculate how old someone was/will be on any particular date.

How to Use the Date of Birth Calculator

Whether you are curious about your exact age, trying to figure out someone’s birth date or planning a surprise birthday party, this calculator has you covered! Here’s how to make the most of it:

1. Calculate Your Exact Age

This is the most popular feature of this tool and it’s super simple to use:

Click on the “Calculate Age” tab (it’s selected by default)

Enter your date of birth in the date picker
Hit the “Calculate Age” button

You’ll instantly see your age broken down in multiple ways i.e years, months, days and even how many total days you have been alive! Pretty cool, right? Plus, you’ll discover your zodiac sign and find out exactly how many days until your next birthday.

Pro tip: Use this to settle those “I’m older than you!” debates with friends. The calculator is accurate down to the day!

2. Find Someone’s Birth Date (Reverse Calculator)

You know someone’s age but not their exact birth date? This feature is perfect for that:

1. Switch to the “Find Birth Date” tab

2. Enter the age and here’s the cool part: you can use decimals! For example:

Type 32.4 for someone who’s 32 years and 4 months old

Type 25.11 for 25 years and 11 months
Or just enter 30 for exactly 30 years

3. Choose a reference date (usually today’s date, which is already filled in)

4. Click “Find Birth Date”

The calculator will work backwards and tell you the approximate birth date. This is super handy to find out when someone was born!

3. Calculate Age on a Specific Date

This one’s great for historical research, legal documents or just satisfying your curiosity:

Go to the “Age on Date” tab
Enter the person’s date of birth
Pick any date you want to check (past or future!)
Click “Calculate”

Want to know how old you’ll be on New Year’s Eve 2030? Or how old your grandparent was when you were born? This feature answers those questions instantly.

Common Uses of DOB Calculator

People use this calculator for all sorts of things:

Verifying ages for legal or official documents
Planning milestone birthday celebrations
Genealogy and family history research
Astrology and zodiac sign checking

Privacy Note!

Your data never leaves your device. All calculations happen right in your browser, so your personal information stays 100% private. No storage, no tracking, no worries!