Calculate Your Birth Chart
Get a complete natal chart with all planetary positions, houses, and aspects — calculated with Swiss Ephemeris precision.
Read the story behind your chart
An automated standard birth-chart reading in an English PDF, available as a one-time purchase. This is a separate product from the premium Long Reading.
Birth time is unknown. Rising sign and houses cannot be established.
View sample (English PDF, new tab)
The fictional sample opens in a new tab and keeps your chart here. Your reading uses this calculated result.
An automated standard birth-chart reading in an English PDF, available as a one-time purchase. This is a separate product from the premium Long Reading.
Use the birth details from this result for a one-time report. Review the price and terms in secure checkout before paying.
Birth time is unknown. Rising sign and houses cannot be established.
Guide: read your birth chart step by step
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What Is a Birth Chart?
A birth chart (natal chart) is a map of where all the planets were at the exact moment of your birth, as seen from your birth location. It is the foundation of personal astrology — a cosmic snapshot that reveals personality, talents, challenges, and life themes. The chart includes positions of the Sun, Moon, Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto across 12 zodiac signs and 12 houses.
How Is It Calculated?
Enter your birth date, local birth time and city. We calculate planetary positions with Swiss Ephemeris, using the tropical zodiac and Placidus houses, and show the aspects between them. If you do not know your birth time, select that option: the result uses a representative time and omits houses and the Ascendant.
Why Does It Matter?
A birth chart is astrology's most complete tool for self-understanding. It goes far beyond your Sun sign, revealing the complex interplay of all planetary energies in your life. Professional astrologers use natal charts for everything from career counseling to relationship analysis and timing important decisions.
Frequently Asked Questions
How accurate is the free birth chart calculator?
Astro Engine calculates planetary positions with Swiss Ephemeris. The result depends on your birth details and the calculation method. If your birth time is unknown, positions are approximate and houses and the Ascendant are unavailable. Calculation precision does not establish the accuracy of an astrological prediction.
Is exact birth time needed for a natal chart?
Birth time is needed for calculating the Ascendant, house positions, and precise Moon placement. Without it, you will still get planetary positions by sign, but houses and the Ascendant will be missing. Check your birth certificate or hospital records for the most accurate time.
What is the difference between a natal chart and a birth chart?
A natal chart and a birth chart are the same thing — both terms refer to the map of planetary positions at the moment of birth. 'Natal' comes from the Latin word for 'birth.' Astrologers use both terms interchangeably.
What house system does this calculator use?
This calculator uses the tropical zodiac and Placidus houses. House-system selection is not available in this form. Houses and the Ascendant require a confirmed birth time.
What is the difference between a natal chart and a horoscope?
A natal chart is your unique planetary map at birth — it never changes. A horoscope is a forecast based on current planetary movements (transits) relative to your natal chart. You need a natal chart first to get an accurate horoscope.
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