Age Calculator

Precise age calculation tool with zodiac, constellation query and birthday countdown.

Features

• Precise age calculation to days
• Support custom reference date
• Automatic Chinese zodiac calculation
• Automatic constellation calculation
• Display next birthday countdown
• Multiple time unit conversions (days, hours, minutes, seconds)
• One-click copy calculation results
• Responsive design, support mobile devices
• Dark/light theme switching
• Internationalization support (Chinese/English)

Usage Instructions

1. Select date of birth
2. Optional: Check custom reference date and select the date to calculate
3. System automatically calculates and displays age information
4. Click "Copy Result" button to save calculation results

Supported Query Content

Basic Information

• Chronological age (years, months, days)
• Total days
• Total hours
• Total minutes
• Total seconds

Additional Information

• Chinese zodiac (12 zodiac signs)
• Constellation (12 constellations)
• Days until next birthday

Application Scenarios

• Query accurate age
• Zodiac and constellation matching
• Birthday reminder
• Age information statistics
• Registration information filling assistance
• Zodiac and constellation fortune query

Notes

• Please select Gregorian date for date of birth
• Leap year date calculation is automatically adapted
• Custom reference date must be later than date of birth
• Zodiac calculation based on lunar year conversion
• Constellation calculation based on Gregorian date of birth