Welcome to Hypatia!
Hypatia is a free, open source, portable programmable calculator for 64bit Windows computers.
This is the documentation for the upcoming version 4.5 (late April or early May 2025).
The currrent version of Hypatia is 4.21.
This documentation is work in progress, last updated April 26, 2025
The Hypatia website is hypatia-rpn.net, please keep checking for updates.
HELP doc opens this documentation in Hypatia.
For changes from prior versions see page Release Notes in the Appendix.
This documentation is arranged in chapters, with several pages each.
To optimize accessibility for visually impaired users it only uses 7bit ASCII characters, and (apart from monospaced) no text attributes.
Notes on User-Defined Elements
HY, Silent Mode and Accumulation Mode
Script Example: Body Mass Index
Script Example: Centimeters to Feet and Inches
Loop Index, Start and End Lines
Loop Example: Centimeters-Feet-Inches Table
Loop Example: Iteration (Babylonian Root)
Loop Example: Monte Carlo Experiments
Loop Example: Fibonacci Sequences