MathPad H-S Chart (Enthalpy-Entropy chart) is utility aimed to simplify calculations of enthalpy, entropy, pressure, temperature, specific volume and quality of steam and water.

This software is a network of HTML pages with embedded Java Applets that helps users understand thermodynamic of steam and perform parametric studies visually without any programming. 

MathPad H-S Chart express the regions of saturated steam and super heated steam, and it's region is limited to following ranges.

English, Metric, and Standard International engineering units are supported.