A snapshot of the sky the moment you were born — Sun, Moon, Rising and planets, in 3D.
Your birth chart (or natal chart) maps where the planets stood at the exact instant and place of your birth. That is why it needs three inputs — date, time and city — and why two people with the same Sun sign can be so different: they share one placement and almost nothing else.
We default to noon. Your planets and, in most cases, your Moon stay correct — only the Rising sign and houses need confirming later. If you find the time afterwards, update it and the chart completes itself.
How to read it once you have it
Start with Sun, Moon and Rising: those three explain most of what feels off when you only read your Sun sign. Then look at Mercury (how you think and speak), Venus (how you love) and Mars (how you act and want). Aspects and houses come after that, not before.
Yes. You calculate and read your chart on AstroVibe without paying and without a mandatory sign-up. A free account only exists so you can save the chart and get a daily horoscope.
What do I need to calculate a birth chart?
Three things: date of birth, city of birth and time of birth. The time is what produces the Rising sign and the houses — without it the planets are still correct but the rest is incomplete.
What if I do not know my exact birth time?
You can still calculate: we default to noon, and the Sun, the planets and usually the Moon stay reliable. Only the Rising sign and houses remain unconfirmed. Birth certificates often list the time.
Which zodiac system do you use?
The tropical zodiac — the western standard, the same one behind the horoscopes you already read.
What does a birth chart actually show?
A snapshot of the sky at your exact moment and place of birth: which sign each planet was in, your Rising sign, the houses, and the angles between them. It is the basis of every personalised astrological reading.