The Psychrometric Chart Calculator is an interactive web-based simulation tool designed to visualize and compute the properties of moist air. It enables users to adjust dry-bulb temperature and relative humidity to plot the corresponding state point on a live psychrometric chart. The tool instantly calculates key air properties, including humidity ratio, enthalpy, dew point, and specific volume, using the Magnus formula and related thermodynamic equations.
This calculator is particularly relevant for those involved in thermal and HVAC applications, such as engineers designing heating, cooling, and dehumidification systems. It is also applicable in fields like industrial drying, data center cooling, weather forecasting, and agriculture, where understanding the interrelation of air temperature, humidity, and energy content is essential. By manipulating input sliders for temperature and humidity, users can observe in real time how these changes affect dew point, enthalpy, and other properties, aiding in both educational and practical scenarios.
The platform displays results visually on a psychrometric chart, mapping dry-bulb temperature against humidity ratio, and provides process lines for common air treatment actions such as sensible heating, cooling, humidification, and dehumidification. The underlying calculations are based on established physical models, including the Magnus formula for saturation vapor pressure, formulas for humidity ratio, and enthalpy equations that account for both sensible and latent heat.
Delivered as a web application, the Psychrometric Chart Calculator requires no installation and is accessible through a browser. Its primary function is to serve as a simulation and calculation tool for understanding and applying psychrometric principles in real-world and instructional contexts.
Psychrometric Chart Calculator is an Other productivity product. It focuses on simplifying the calculation and visualization of air properties for HVAC and engineering professionals. It is built as a B2B product for HVAC engineers and students. Psychrometric Chart Calculator is free to use. It runs on the web.
NovaSolver builds and maintains Psychrometric Chart Calculator, and the product first shipped in 2026. Development happens publicly on GitHub with 7 commits in the last 90 days. PulseGate's similarity index finds few close equivalents — Psychrometric Chart Calculator occupies a relatively distinct niche. Key capabilities include live psychrometric chart, temperature/humidity sliders, and dew point calculation. The interface is available in English, Japanese, and Chinese.
Latest indexed changes and source events
Reading a Psychrometric Chart Without Getting Lost discovered by the PulseGate indexer
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