Humidity Calculator

Calculate theoretical humidity to check your humidifier's filter performance.

[App Overview]

"Based on outdoor air data and indoor temperature, the system calculates the 'theoretical indoor humidity' (the humidity level if no humidification were performed).

By comparing the 'measured value' with this 'theoretical value,' it is possible to get a rough estimate of the humidifier’s actual output.

Monitoring this data continuously allows you to detect any decline in the humidifying filter's performance over time."

[Key Features]

Outdoor Data Integration: Automatically fetch the latest weather data from official sources based on your location, or enter data manually.

Theoretical Humidity Calculation: Instantly calculate the "baseline humidity" based on saturated vapor pressure and your indoor heating temperature.

Performance Diagnostics: Monitor how effectively your humidifier is working by comparing theoretical vs. actual humidity.

Maintenance Alerts: Detect drops in humidification efficiency to know exactly when to clean or replace your humidifier filter.

[Why the "Theoretical Value" Matters] Filters in evaporative and hybrid humidifiers inevitably lose performance over time due to mineral buildup (scale) and dust, even if they look clean.

With this app, you can identify issues early:

"The humidifier is on, but the actual humidity is the same as the theoretical value."

"The gap between the theoretical and actual humidity is smaller than before." These insights help you maintain a healthy environment by knowing exactly when it's time for filter maintenance.

[Recommended For]

Users of evaporative or hybrid humidifiers.

Anyone wanting an objective measure for filter replacement/cleaning.

Those who want to understand the scientific relationship between heating and dryness.