Our age calculator is 100% accurate and uses advanced algorithms that account for all calendar complexities including:

• Leap years (every 4 years, except century years not divisible by 400)
• Varying month lengths (28, 29, 30, or 31 days)
• Exact time calculations down to the second
• All historical calendar adjustments

The calculations are performed using JavaScript's built-in Date object, which follows the ISO 8601 standard for date and time representation.

Absolutely yes! Your privacy is our top priority:

• All calculations are performed locally in your web browser
• No data is transmitted to our servers or stored anywhere
• We don't use cookies for the calculator functionality
• No registration or personal information is required
• Your dates and results remain completely private to you

When you close your browser tab, all information is immediately erased from memory.

Yes! You can calculate the age of anyone by entering their birth date. This is useful for:

• Determining children's ages for school enrollment
• Calculating ages for birthday party planning
• Finding celebrity or historical figure ages
• Verifying age requirements for various activities
• Comparing ages between family members or friends

Simply enter the birth date of the person whose age you want to calculate, and the tool will provide accurate results instantly.

Our calculator fully supports leap day birthdays! Here's what you need to know:

• You can select February 29 as your birth date
• The calculator correctly handles leap year logic
• On non-leap years, calculations use March 1 as reference
• Age is still calculated correctly regardless of leap year status
• All time units (days, hours, minutes) remain accurate

Fun fact: People born on February 29 are called "leaplings" or "leapers" and technically have a birthday only once every 4 years!

Our calculator can handle dates from 1900 to 2035. However, keep in mind:

• The Gregorian calendar is used for all calculations
• Modern calendar calculations are most accurate from 1900 onwards
• The calculator works perfectly for all dates in this range
• Future date calculations can project up to 2035

This range covers virtually all practical use cases for age calculation.

Each calculation mode serves a specific purpose:

• Calculate Now: Perfect for finding your current exact age for forms, applications, or just curiosity
• Compare Ages: Useful for calculating time differences between events, comparing siblings' ages, or measuring project durations
• Age at Date: Ideal for determining how old someone was/will be on a specific date, useful for historical research or planning
• Future Calculator: Great for retirement planning, milestone predictions, or future age projections

Having multiple modes makes the calculator versatile for various personal, professional, and academic needs.

Once the page is loaded, the calculator works offline! Here's why:

• All code runs locally in your browser (JavaScript)
• No server connection is needed for calculations
• You can bookmark the page for quick access
• Works in airplane mode or without internet connection

Tip: After loading the page once, you can save it to your device for permanent offline access. Just use your browser's "Save Page As" feature.

Yes, completely free! Our age calculator is 100% free with:

• No registration or account required
• No hidden fees or premium features
• Unlimited calculations - use it as many times as you want
• No advertisements interfering with calculations
• All features available to everyone

We provide this tool as a free public service. Our mission is to make accurate age calculations accessible to everyone worldwide.