Free birth chart calculator
The exact moment you arrived.
The sky shifts by the minute, so the time matters. If you don't know it, that's alright — we'll skip the houses and rising sign.
What is a birth chart?
A birth chart — also called a natal chart — is a map of the sky at the exact minute and place you were born. It shows where the Sun, Moon and every planet stood, which zodiac sign each was in, and how they were angled to one another.
Astrologers read it as a portrait of temperament: the Sun for your core self, the Moon for your emotional life, the Rising sign for how you meet the world, and the planets and houses for everything in between.
What your chart shows
- Your Big Three — Sun, Moon and Rising — the heart of your personality.
- All ten planets in their signs and houses, each explained in plain language.
- The aspects between planets — where your energies flow and where they clash.
- A chart wheel you can explore, plus a card to save and a link to share.
Don't know your birth time?
You can still calculate your chart. Planet signs and most aspects stay accurate; only the Rising sign and house placements need the exact time, so we hide those and tell you why. A birth certificate or hospital record usually has the time.
Questions
Is this birth chart calculator really free?
Yes — completely free, with no account and no limits. Your chart is calculated in your browser, so your birth details never leave your device.
What do I need to calculate my birth chart?
Your date of birth, the time as exactly as you can find it, and the city where you were born. We look up the coordinates and time zone for you, including historical daylight-saving rules.
What's the difference between a birth chart and a horoscope?
A daily horoscope reads today's sky for everyone with the same Sun sign. Your birth chart is the whole sky at your exact moment of birth — unique to you, and the basis for personal transits.
Can I check compatibility with my chart?
Yes. Once you have your chart, open Compatibility to compare it with a partner's, friend's or family member's and see where your charts flow and where they spark.