Index
Free astrology calculators: chart, timing, numbers
Every calculator on Astro Timing runs in your browser: birth chart, big three, Moon and rising signs, synastry, transits, astrocartography, Saturn return, nakshatra, rashi, life path and personal year. Birth details are never sent to a server or stored. Each page states its method, its zodiac and its limits next to the result.
Which calculator do you need?
Your chart
Birth chart calculator: Western + Vedic
Calculate your birth chart in Western and Vedic astrology side by side, entirely in your browser.
Big three calculator: Sun, Moon and rising
Your big three are the Sun sign, the Moon sign and the rising sign (ascendant).
Moon sign calculator: both zodiac systems
Find your tropical and sidereal Moon signs using your birth date and exact time.
Rising sign calculator: find your ascendant
Your rising sign depends on birth time, latitude and longitude; an approximate time can change the result.
Western vs Vedic sign calculator
Your Western and Vedic Sun signs can differ because their zodiacs use different starting points.
Synastry calculator: compare two birth charts
Synastry compares two birth charts planet by planet.
Astrocartography map: your planetary lines
An astrocartography map shows where on Earth each planet was rising, setting, culminating or at the lowest point at your birth moment.
Vedic
Vedic birth chart: Lahiri sidereal calculator
Calculate a Lahiri sidereal chart with whole-sign houses and Moon nakshatra, including its pada.
Nakshatra calculator: your birth star and pada
Your birth nakshatra (janma nakshatra) is the sidereal lunar mansion that held the Moon at birth.
Vedic Moon sign calculator: find your rashi
In Vedic astrology your rashi is the sidereal sign of the Moon at birth, not the Sun sign.
Timing
Transit chart: what is happening in your chart now
A transit chart compares where the planets are today with your birth chart.
Saturn return calculator: exact first-return dates
Find the dates when Saturn returns to its birth longitude, usually around your late twenties.
Moon phase today: illumination, sign and tithi
The Moon phase today is calculated from the angle between the Moon and Sun, with a live UTC timestamp.
Vision board maker: goals, chart anchors and images
Answer a few questions and get a vision board built on your chart: each goal gets the house and planet behind it and its next window to act, an affirmation in your words and an image.
Numbers
Life path number calculator: every step shown
Your life path number comes from your full birth date: reduce the month, day and year to single digits, keeping the master numbers 11, 22 and 33, then add and reduce again.
Personal year calculator: your number for any year
Your personal year number adds your birth month and day to the current calendar year and reduces the total to a single digit from 1 to 9.
How we calculate
Is astrology a guarantee of what will happen?
No. These calculations locate celestial bodies; astrology is a reflection and timing tradition, not evidence of guaranteed health, financial or relationship outcomes.
How are these results calculated?
Positions come from Astronomy Engine, an open-source astronomy library, and are checked against Swiss Ephemeris in our methodology tests. Western readings use the tropical zodiac; Vedic readings subtract the Lahiri ayanamsa. Terms are defined in the glossary.
Next: compare your birth chart, see today's sky, or make a private vision board.