EightLetters is a free BaZi (Four Pillars of Destiny) calculator: enter a birth date and time, and get a full chart plus an AI-written reading — five elements, ten gods, luck cycles, and more.
Most BaZi apps we tried cut the same three corners: they switch the year pillar at Chinese New Year instead of the solar term Start of Spring, they read the month pillar off the lunar calendar instead of the 24 solar terms, and they skip true solar time correction entirely — even though classical BaZi is defined by all three. The gap between "close enough" and "correct" usually shows up right at the edges: someone born in early February, or right at a solar term boundary, or far enough from their time zone's standard meridian.
EightLetters computes solar terms to the second using astronomical data (not a lookup table), and applies a true solar time correction when you provide a birth city. The full breakdown of what's calculated and how is on our methodology page.
The base chart and reading — four pillars, five-element distribution, day master strength, ten gods, personality, and a general reading — is free, no account required. Two optional deeper reports, covering your decade-by-decade luck cycles and specific yearly forecasts, are paid add-ons priced at checkout.
EightLetters is built and maintained by a small team. We don't claim to be professional fortune-tellers, and we say so plainly in our terms: this is a traditional interpretive framework for reflection, not a substitute for professional advice. If you have questions, feedback, or a data request, reach us at support@kindlingstudio.ca.
See your own chart.
Calculate My BaZi Chart →