Almanac & sky · NUMORA
Cast Compare Calculator
Same date and question, two probability streams side by side.
Open interactive calculatorHow to use
Not a contest of accuracy — two random models in the open.
Formula
Same seed formula; yarrowLines vs coinLines
FAQ
Is this Cast Compare calculator accurate?
The formula and assumptions are shown on the page, and the engine is covered by audit tests. Results are for reference — not financial or medical advice.
Do I need an account?
No. Calculations run in your browser. Recents can stay on this device.
What inputs do I need?
Not a contest of accuracy — two random models in the open.
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