Work out your chart
Every tool here runs the same computation the paid readings are built on, verified against a fixed set of known charts. The maths happens in your own browser, nothing is sent anywhere, and there is no account step.
Day Master Finder
Your day master is the heavenly stem of your day pillar, and it is the reference point every other part of a reading is measured against. This is the shortest way to find it.
Returns: The one character your whole chart is built around, with what it tends to mean
BaZi Calculator 八字
The full four pillars rather than one character, corrected for true solar time at your birth longitude, with the element balance counted and every character glossed in English.
Returns: All four pillars with hidden stems, every character translated, the true solar correction shown
Zi Wei Dou Shu Chart 紫微斗數
The astrolabe drawn as a twelve palace plan, with the main stars placed and named. The system that sorts a life by area rather than by element.
Returns: Twelve palaces drawn out, each star named in English beside its character
Kua Number Calculator 命卦
One number decides which four compass directions work for you. This works it out from the Li Chun adjusted year rather than the calendar year, which is where most calculators get it wrong.
Returns: Your Kua number, your four favourable directions and your four rough ones in severity order
Why a free tool and a paid reading agree
These tools do not approximate the readings. They import the same functions: the same solar correction, the same calendar tables, the same day-boundary convention. A test run on every build compares the calculator against the readings engine across thousands of births and fails the build if a single one disagrees.
That matters because the alternative is worse than useless. A free tool that hands you one day master and a paid document that hands you another is not a small inconsistency; it is a reason to distrust both.
What these will not do
They draw the chart. They do not interpret it, and they deliberately stop short of the luck pillars 大運, the ten-year cycles a chart runs through. Shown bare, with nothing around them, those are the part of a chart most likely to be read as fate, and reading them properly is the largest single job a reading does.
Nothing you type is sent anywhere. The computation runs in your own browser, there is no account step, and no birth data reaches a server, including ours.
A tool gives you the chart
A reading tells you what it means, section by section, and closes each one on the decision in front of you.
Still working out which system answers your question? Look a term up first