Humidity Calculator

Contains ads
10+
Downloads
Content rating
Everyone
Screenshot image
Screenshot image
Screenshot image

About this app

[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.
Updated on
Apr 4, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Location and Device or other IDs
This app may collect these data types
Location and Device or other IDs
Data is encrypted in transit
Data can’t be deleted

What’s new

Tablet and Large Screen Optimization

App support

About the developer
大澤広明
ratel.okottel@gmail.com
花見川区幕張本郷4丁目2−23 ラシュレ 203 千葉市, 千葉県 262-0033 Japan