About Birth Chart Library
A free, open-source astrology platform built for learners and enthusiasts alike.
What is Birth Chart Library?
Birth Chart Library is a free natal chart calculator and astrology reference platform. Enter your date, time, and place of birth and receive a complete birth chart — every planet position, house placement, and sign — paired with detailed interpretations written to help you understand what each placement means in plain, accessible language.
What can you do here?
- Generate your free natal birth chart using Swiss Ephemeris precision calculations
- Read detailed interpretations for every planet, sign, and house combination in your chart
- Receive a personalized daily horoscope based on your natal chart and current planetary transits
- Explore birth charts for hundreds of celebrities and public figures
- Generate and save charts for the people in your life
- Browse the full astrology interpretation library as a reference resource
Our approach
Astrology is a centuries-old system of symbolism that many people find genuinely useful for self-reflection and understanding. Our goal is not to tell you what to believe, but to present the traditional meanings and interpretations of natal chart placements in a clear, educational format — and let you draw your own conclusions.
Every interpretation on this site is written to be straightforward and informative, with a grounded, positive tone. We avoid vague generalities and sensationalism in favor of substance.
Open source
Birth Chart Library is open source software licensed under the GNU Affero General Public License v3.0 (AGPL-3.0). The source code is available on GitHub. Planetary calculations are powered by the Swiss Ephemeris, the gold standard in astrological computation.
Get started
Create a free account to generate your birth chart and unlock your personalized daily horoscope. No payment required — ever.