| What it does | Free exact age calculator in years, months and days for educators, clinicians and parents
| Birth chart calculator
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| Pricing model | Free
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| Key features | - Instant calculation of exact age in years, months, and days
- Multiple output formats including test format (Y;M;D), decimal years, total days, weeks, and hours
- Automatic leap year handling
- Exact month length calculation using actual days per month
- Custom reference date selection for past or future dates
- No registration or sign-up required
- Browser-based calculation with no data storage
- Clean interface without ads or clutter
- Results in standardized test format
| - Calculate Sun, Moon and rising signs
- Shows ten planets and aspects
- Multiple house systems available
- Private data processing on device
- Save birth details to browser
- Support for unknown birth times
- Historical time zone handling
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| What makes it different | - Built specifically for professionals who need accurate age calculations for standardized assessments and school placement decisions
- Completely private with all calculations done in your browser and no data collection
- Handles edge cases that trip up manual calculation like leap years and month-end dates
- Free alternative to discontinued publisher tools that professionals previously relied on
| - Calculated entirely on your device with no cloud storage
- No account or login required
- Uses Astronomy Engine for precise geocentric calculations
- Explains astrological concepts and limitations
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 11 ● no change since last check | 2 ● no change since last check |
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| Trust Flow (Majestic) | 3 | 4 |
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| Citation Flow (Majestic) | 20 | 12 |
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| Referring domains (Majestic) | 59 | 3 |
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Chronological Age Calculator
birthchart.io