Free Birth Chart Calculator

Cast your chart

Three fields. No sign-up.

What a finished chart looks like

This is a sample chart, not yours — an example birth of 15 June 1990, 2:30 PM — London, United Kingdom, shown so you can see the output before you type anything. Your own chart appears above, in the same format.

How to read your birth chart

The wheel is a map of the sky, drawn from where you were standing

A birth chart is not a picture of the stars in general. It is a picture of the sky as seen from one spot on the Earth's surface, at one minute, in one year — yours. The ring around the outside is the zodiac: the band of sky the Sun and planets travel through, divided into twelve equal thirty-degree signs. The symbols inside the ring are the planets, each pinned to the exact degree it occupied at your birth. The spokes running across the middle are the house cusps, and the one marked ASC is your Ascendant — the point where the sky met the eastern horizon that minute.

Your Big Three do most of the talking

Sun, Moon and Rising are the three placements people mean when they say they are a Leo with a Scorpio moon. Your Sun sign is the one you already know: where the Sun sat that day, read as character and drive — the thing you are recognisably about. Your Moon sign moves far faster, a whole sign every two and a half days, and is traditionally read as inner weather: what settles you, what unsettles you, how you react before you have thought about it. Your Rising sign, the Ascendant, is the sign that was climbing over the horizon as you were born. It is read as the front door — the manner people meet first, before they know you. It is also the one placement that genuinely needs an accurate birth time, because the horizon advances a full degree every four minutes.

Houses are the areas of life

The twelve numbered wedges are the houses, and they answer where rather than what. The first house is the self and the way you begin things; the second, money and what you own; the fourth, home and family; the seventh, partnership and the people you go one-to-one with; the tenth, work and public standing. A planet sitting in a house is read as that planet's energy turning up in that department of your life — Venus in the tenth reads very differently from Venus in the fourth. Houses are calculated from your birth time and the latitude of your birthplace, which is exactly why both are asked for, and why an unknown time leaves them approximate.

Planets are what is happening; signs are how

Ten bodies are plotted. Mercury covers thinking and talking, Venus what you value and who you are drawn to, Mars what you go after and how hard, Jupiter growth and appetite, Saturn limits and structure and the lessons that take a decade to land. The outer three — Uranus, Neptune and Pluto — crawl so slowly that everyone born within a few years of you shares their sign, so they describe a generation more than a person; what makes them yours is the house they fall in. The sign a planet occupies colours how it behaves; the house tells you where to look for it. A planet marked ℞ appeared to be moving backwards from Earth at your birth — that energy read as turned inward.

Where to start

Read the Big Three first, then look for a crowd: two or three planets bunched at nearby degrees, or one house holding several at once. Concentration is usually the loudest thing in a chart, and a better place to begin than working through ten placements in order. Empty houses are normal and mean nothing bad — those areas are simply described by the sign on the cusp instead.

Questions

What if I don't know my birth time?

You can still get a chart, and most of it will be exactly right. Tick "I don't know my birth time" and we calculate for 12:00 noon at your birthplace. Your Sun sign is unaffected — the Sun moves about a degree a day. Your Moon sign is right the overwhelming majority of the time, since the Moon covers roughly half a sign in twenty-four hours; only births near a sign change are uncertain. What noon cannot give you is a reliable Ascendant or house placements, because the horizon rotates a full degree every four minutes. We label the rising sign approximate rather than quietly presenting a guess as a fact.

Is it really free? Do I have to make an account?

Free, and no. There is no sign-up, no email wall, no card, and nothing is hidden behind a "continue" button. You enter three things, you get the whole chart — Big Three, wheel and every planet with its degree and house. DayLuck sells a subscription for its daily forecasts, and there is a link to it below your results, but the calculator on this page is complete on its own and always will be.

How accurate is it?

Positions come from the Swiss Ephemeris, the same planetary data set professional astrology software is built on, accurate to a fraction of an arcsecond over any date you are likely to enter. Houses are Placidus, the most widely used system in Western astrology. The realistic limits on accuracy are your inputs, not the maths: an approximate birth time moves the Ascendant, and a birthplace given as a large city uses that city centre coordinates, which is close enough for every placement in the chart.

What happens to my birth details?

They are sent once to our calculation service to compute the chart, and that is the end of them. Nothing is stored, no account is created, your chart never gets a URL of its own, and your birth date and time never appear in the address bar. Close the tab and the chart is gone. If you want a chart you can come back to, that is what a DayLuck account is for.

What is the difference between this and a daily horoscope?

A newspaper horoscope is written for one twelfth of the planet at a time, from your Sun sign alone. A birth chart is the whole sky at your birth — ten bodies, twelve houses and the angles between them — which is why two people born the same week can share a Sun sign and have almost nothing else in common. This page gives you that chart. DayLuck itself goes a step further and scores how the present-day sky interacts with your specific chart, day by day.

Can I get a chart for someone else?

Yes — the calculator does not care whose birth data it is, so a partner, a child or a friend works exactly the same way. You will need their birth date and place at minimum. Nothing is saved either way, so if you are casting several charts, note down what you want to keep before you close the tab.