Free Natal Chart Calculator — Real Astrology, Instant
Aether computes your natal chart, Chinese BaZi pillars, synodic cycles, and astrocartography from real orbital mechanics — not a template filled in from your sun sign. Enter your birth date, time, and place, and every planetary position, house cusp, and aspect is genuinely calculated for that exact moment, the same way a professional astrology program works, free forever with no login required for the calculation itself.
This isn't a marketing claim without substance behind it: every planetary longitude is solved from real Keplerian orbital elements, every Chinese BaZi pillar changes at the Sun's actual jieqi solar-term crossing rather than the 1st of a Gregorian month, and you can choose Porphyry, Placidus, Whole Sign, or Equal houses — each genuinely computed, not a shared calculation wearing different names.
Every calculator on this site — from the natal chart to the Vedic dasha timeline to the mundane World Astrology tool — is reachable from here, and every one of them shares the same underlying computation engine, so a placement shown on one page is consistent with what every other page on the site says about it.
Frequently Asked Questions
Is Aether free?
Yes — every calculation is free forever. A free account is required to generate a report, and unlocks one AI-written reading per day.
Do I need an account to calculate my chart?
No — your natal chart, BaZi pillars, and astrocartography compute instantly in your browser, free, with no login. An account is only needed for the AI-written reading (so it isn't open to unbounded automated use) and to save charts to your Report Vault.
Is my birth data private?
Your data is yours. We don't sell it, and the AI reading is instructed to describe only your own computed chart — nothing else.
How accurate is the astrology?
Positions come from real orbital mechanics and real solar-term boundaries — not lookup tables or generic sun-sign content.