| What it does | Free Mifflin-St Jeor calculator that shows every step of the equation
| Free astrology calculators with published methods and astronomical accuracy
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Free
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| Pricing | Not given
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| Key features | - Shows full equation working with step-by-step substitution
- Multiple activity levels from sedentary (×1.2) to extra active (×1.9)
- Katch-McArdle calculator using body fat percentage
- Step-based TDEE estimation
- Adaptive TDEE calculator from weight changes
- Embeddable calculator iframe
- Metric and imperial unit switching
- Comparison with other equations like Harris-Benedict
| - Calculate Chiron sign and degree from birth date
- Optional birth time to determine Chiron house
- Exact Chiron return dates
- NASA JPL Horizons ephemeris data
- Chiron retrograde calendar
- Birth date range 1900 to 2100
- Chiron sign interpretations
- Historical timezone accounting
- Published methodology and accuracy verification
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| What makes it different | - Shows all working so users can verify the math themselves
- Uses the most accurate equation for healthy adults
- Multiple calculation methods beyond basic equation
- Transparent about accuracy limitations and sources
- Completely free with no tracking or cookies
| - Uses NASA JPL Horizons data verified to within a fraction of an arcsecond
- Open source code and ephemeris data on GitHub
- No account required and birth details not stored
- Transparent about calculation methods and limitations
- Handles uncertain birth times with clear flagging
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 16 ▲ +1 (up) since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 1 | 0 |
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| Citation Flow (Majestic) | 16 | 16 |
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| Referring domains (Majestic) | 3 | 2 |
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