Every tool on this page runs the same classical rules a practitioner uses — Four Pillars cast from astronomical solar terms, solar-time corrected, school-consistent — in your browser, free, with no sign-up and no paywall. Your birth details never leave your device: the tools store them locally so your results are personal, and each one has a "forget me" button.
Start anywhere. Your chart is the thread that connects them.
Last updated: July 2026
Your Four Pillars, Day Master, Ten Gods and luck cycles — solar-time corrected, with a chart you can save as PDF.
Cast your chart →Two charts, six lenses — couples, friends, colleagues, boss & subordinate, parent & child, business partners.
Compare two charts →Your number's I-Ching hexagram, ranked for wealth, career, love and health — personal or business mode.
Check your number →Any date, checked against the almanac and your own chart — weddings, moves, openings, signings.
Check a date →Your ten-year luck pillars as plain-English career seasons — which one you're in, what it favours, when the next opens.
Find your season →What each tool is for
BaZi Calculator — the foundation. Casts your Four Pillars chart from your birth date, time and place, names your Day Master, and explains what each pillar means in plain English. If you only try one tool, try this one.
Compatibility 合盘 — compares two charts: couples first, but also business partners, parent and child, boss and hire. Shows where two charts feed each other and where they grind.
Date Checker 择日 — checks any date against the almanac: what the day supports, what it doesn't, and whether it clashes your sign or your chart. The daily version of this lives on the homepage Today card, which also asks one reflective question a day.
Luck Cycle Navigator 大运 — finds the ten-year season your career is in now and the two after it, with the years each covers and the questions worth sitting with.
Phone Number Analyzer — reads your mobile number through He Tu pairings and trigrams, and checks it against your chart. The full 64-hexagram reference is open too.
Why these are free
The honest reason: a tool can compute, but it can't read. Everything on this page is the computable layer of Chinese metaphysics — exact, verifiable, and the same for everyone who enters the same details. What a tool can't do is weigh the whole picture: how your pillars combine, what this year's stem does to your chart, which of two conflicting signals wins. That's judgment, and judgment is the paid work. The tools are free because they're the map; a reading is the journey.
A result is not a reading
Built for everyone to use, and computed exactly from the classical rules. But charts are interpreted as a whole, and that craft belongs with a practitioner. Treat every result here as the map, not the verdict — and if a result raises a question that matters, that's what a session is for.
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Yes — every tool is free, with no sign-up, no account, and no paywall. They compute the classical layer of BaZi exactly; interpretation of the full picture is what paid readings are for, and the tools never hold results hostage to get you there.
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Nowhere. Tools that use your birth date store it in your own browser (localStorage) so your results stay personal between visits — it is never sent to a server. Every tool has a "forget my birth date" control that deletes it instantly.
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The engines compute solar terms astronomically, apply solar-time correction (with city presets and historical timezone handling for Singapore and Malaysia), and follow the classical rules consistently across all tools — the same shared engine, tested against published almanac and chart references. What the tools deliberately don't do is interpret: combinations, clashes and annual overlays are read, not computed.
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The BaZi Calculator. It casts your chart and names your Day Master, which every other tool builds on — compatibility compares two charts, the date checker and luck cycles read days and decades against yours.
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A tool computes your chart's facts; a reading interprets them as a whole — how the pillars combine, what the current year does to them, and what it means for the decision in front of you. The tools are the map; a 60-minute session with Master Yuan (S$180) is the journey.
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Yes. Birth-place presets cover 44 cities and the engines handle solar-time correction worldwide, including historical timezone changes. If your birth time is unknown, tick the option and the tools use the noon convention, clearly labelled.
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Every tool generates a personalised share card — your result on a background coloured by your chart's elements — sized for WhatsApp, Instagram and TikTok. Sharing is optional and happens from your device.