numerology
Pythagorean numerology — your Life Path, Expression, Soul Urge, and a few more. Free, no signup.
Just for your records. You can use any name.
Placidus
Standard for modern astrology
Whole Sign
Classical Hellenistic system
Koch
Popular in German astrology
Equal
Each house exactly 30°
House system determines which "area of life" each planet falls in. Your planet signs and aspects stay the same. Placidus is the default.
Nothing is sent to a third party. Your data stays with us, only your saved charts are linked to your account.