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Free Astrology Tools
Calculators for your birth chart and the placements people look up most, from your Moon sign to your Saturn return. They run in your browser, they're free, and there's nothing to sign up for.
Big Three Calculator
Find your Big Three: Sun, Moon and rising sign, plus Venus and Mars. A free sun moon rising calculator that runs in your browser.
Moon Sign Calculator
Free Moon sign calculator. Enter your birth date and place to find your Moon sign. A time is only needed if the Moon changed signs that day.
Rising Sign Calculator
What is my rising sign? Enter your exact birth time and place for a free rising sign calculator that runs in your browser.
Free Birth Chart Calculator
Free birth chart calculator. See your natal chart wheel, planets in signs and houses, nodes, Lilith, Midheaven and more. No sign-up.
Venus Sign Calculator
Free Venus sign calculator. Enter your birth date to find your Venus sign and see why it always sits within two signs of your Sun.
Mars Sign Calculator
Free Mars sign calculator. Enter your birth date to find your Mars sign and how you go after what you want.
Mercury Sign Calculator
Free Mercury sign calculator. Enter your birth date to find your Mercury sign and how you think, talk and learn.
Saturn Return Calculator
Saturn return calculator: find your Saturn sign, the exact dates Saturn crosses back over it, and your age each time. Free, in your browser.
Zodiac Compatibility Calculator
Zodiac compatibility without a score. Compare two birthdays by Sun, Moon, Venus and Mars and see how each pair of signs relates.
North Node Calculator
Find your north node and south node signs from your birth date. A free north node calculator that reads the pair as one axis.
Chart Ruler Calculator
Find your chart ruler: the planet that rules your rising sign, plus its sign and house. Free calculator that needs your birth time and place.
Birth Moon Phase Calculator
What Moon phase was I born under? Enter your birth date and place to find your phase, one of eight from new Moon to waning crescent.
Sun Sign, Decan and Cusp Checker
Born on a cusp? Find your Sun sign, the exact moment the Sun changed signs that year, your Sun's degree and your decan. Free and private.
Dominant Element Calculator
Find your dominant element in astrology. We count your Sun, Moon, Mercury, Venus, Mars and rising by element and show what leads.
Planet positions from Astronomy Engine. Birthplaces from GeoNames (CC BY 4.0).