Calculator
Age Calculator
Calculate your exact age in years, months, days, weeks, and hours from your date of birth.
Your files stay on your device - processed locally via WebAssembly, never uploaded
🔒 All calculations happen in your browser. Your personal data is never sent anywhere.
Embed this tool on your website
Copy this code to add the Age Calculator to your site for free. It runs entirely in your visitors' browsers - no API key, no usage limits.
<iframe src="https://optipix.art/embed/age-calculator" width="100%" height="600" style="border:1px solid #e4e4e7;border-radius:8px;" title="Age Calculator by OptiPix" loading="lazy"></iframe> <p style="font-size:12px">Free tool by <a href="https://optipix.art/age-calculator">OptiPix Age Calculator</a></p>
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About Age Calculator
Last updated: May 2026
OptiPix Age Calculator determines your precise age from your date of birth. See your age in years, months, and days, plus total days alive, total weeks, total months, and approximate total hours. Find out how many days until your next birthday, what day of the week you were born on, your Western zodiac sign, and your Chinese zodiac animal. Optionally calculate age to a specific date instead of today. All calculations use JavaScript's Date arithmetic and run entirely in your browser - your birth date is never sent to any server.
How It Works
The calculator uses JavaScript Date objects to compute the exact difference between two dates. It handles month-length variations and leap years correctly by iterating through year, month, and day differences. Zodiac signs are determined by date ranges (Western) and year modulo 12 (Chinese).
Use Cases
- •Calculate your exact age for official documents
- •Find out how many days until your next birthday
- •Determine the day of the week you were born on
- •Calculate age differences between two dates
- •Look up Western and Chinese zodiac signs
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If you find Age Calculator useful, check out these related tools: BMI Calculator, Unit Converter, and Percentage Calculator. All tools run entirely in your browser with no uploads or signups required.
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Frequently Asked Questions
How accurate is the age calculation?
Can I calculate age to a specific date?
What zodiac signs are shown?
Does it show my day of birth?
Is my birth date sent to any server?
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