Birth chart calculator
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Your free natal chart: the big three first, then the chart wheel, your planets in signs and houses, and your major aspects. Every line says why it’s there.
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Synastry
Your strongest links
Every link between your charts
Whose chart?
Your big three
Good to know
Rising signs through your birth day
| Rising sign | From | To |
|---|
Chart wheel
| Point | Position | House |
|---|
Your big three
Your planets in signs
Your planets in houses
Your major aspects
Compare with someone
Type their details now, or send them a link so they add their own on their phone. Then you both see how your charts meet.
You + them
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Your share card
Keep comparing
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- Moon sign calculator
- Synastry chart
- Zodiac compatibilityOnly know their birthday? Compare your Sun signs in a few seconds.
Destiny matrix
Your matrix from your birth date with every sum shown, then a couple matrix with them.
You need: a birth date
16 types personality test
A short test that gives your type with real scores, then where you two match and differ most.
You need: about 6 minutes
Birth chart or natal chart?
They are the same thing: a map of the sky at the moment and place you were born. Each planet sits in a sign and a house, and the angles between planets are the aspects.
Your big three (Sun, Moon and rising sign) say the most about you, so they come first. Then come the other planets, the houses and the aspects, each with the placement that drives it.
How we calculate it
The planets come from Astronomy Engine, an open-source library we checked against NASA’s JPL Horizons: within 11 arcseconds for our four test births. The Ascendant, MC and houses use our own code and match the leading chart sites to the minute.
Your local birth time is turned into world time with the time-zone rules of your birth place on that date, summer time included. The place card shows the offset used, and you can change it. Houses are Placidus unless you pick Whole Sign. The North Node is the mean node.
No birth time?
You still get your Sun, your planets in signs and most aspects. The rising sign and houses need the time, so we leave them out rather than guess, and we say when the Moon changed sign that day.