I Ching Coin Casting
Cast three virtual coins six times to consult the I Ching (易经). Each throw builds one line of your hexagram - the ancient Chinese oracle responds through the pattern of solid and broken lines.
Cast your coins
Focus on your question. Then cast three coins six times, building your hexagram from the bottom up.
Your hexagram will appear here, line by line, bottom to top.
How I Ching coin casting works
Three coins, six throws
Toss three coins six times. Each head counts 3, each tail counts 2. The sum (6, 7, 8, or 9) determines the line: 6 (old yin, broken → changing), 7 (young yang, solid), 8 (young yin, broken), 9 (old yang, solid → changing). Lines build from bottom (line 1) to top (line 6).
Three hexagrams revealed
Your reading yields up to three hexagrams: the primary (本卦) describes your current situation, the nuclear (互卦) reveals the hidden dynamic within, and the transformed (变卦) shows where things are heading after change resolves.
2500 years of wisdom
The I Ching (Book of Changes) is one of the oldest Chinese classics, dating to the Western Zhou dynasty. Its 64 hexagrams cover every fundamental human situation. Read our complete I Ching guide for the full history and philosophy.
The reading is a start, not a finish
The audit covers the nine areas of a home and the adjustments that shift a situation toward the outcome you cast for.
Frequently Asked Questions
How do I cast a hexagram with three coins?
Toss three coins six times, once per line, building from the bottom up. Each head counts 3 and each tail counts 2. A total of 6 or 9 is a changing line, while 7 and 8 are stable. The tool does the arithmetic and marks which lines change.
What is the difference between the primary and the transformed hexagram?
The primary hexagram (本卦) describes the situation as it stands. Any changing lines flip to their opposite, producing the transformed hexagram (变卦), which shows where things head once the change works through. Read the primary for the present and the transformed for the direction.
What is the nuclear hexagram (互卦)?
The nuclear hexagram is built from the inner lines of the primary. Lines 2, 3, and 4 form its lower trigram, and lines 3, 4, and 5 its upper. It describes the hidden dynamic underneath the situation, the part that is not visible from the surface.