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Humidity Calculator

Humidity calculations and conversions made easy - online, offline and on the go

The free Vaisala Humidity Calculator allows you to calculate several humidity parameters from one known value. Make unit conversions on the fly, and see the effects of changing ambient conditions, like temperature and pressure. Humidity Calculator makes complex manual calculations and conversions a thing of the past.

The tool includes calculation and conversion for: * relative humidity, * dew point / frost point, * absolute humidity, * water content, * mixing ratio, * vapor pressure, * parts per million, * wet bulb temperature, * enthalpy, * specific volume, * density.

Works in eight languages: * English, * Chinese, * Dutch, * Finnish, * French, * German, * Japanese and * Portuguese. NOTE: The iPhone and Android versions of the Calculator are available in English only.

Download Humidity Calculator Windows App
NEW! Start Calculator

Register to start the new
Vaisala Humidity Calculator 5.0.

  • Updated user interface.
  • Works on any operating system with modern browser support - tested with IE9+, Chrome, Firefox, and Safari.
  • No more installing software for offline use - just bookmark the calculator page or add it to the home screen on your mobile device.
Download Humidity Calculator iPhone App Download iPhone app

The Vaisala Humidity Calculator app for iPhone gives you access to easy humidity calculations and conversions on the go. Available from App Store, the app can also be used on your iPad. Just follow the link to download.

Download Humidity Calculator Android App Download Android app

The Vaisala Humidity Calculator app for Android phones gives you access to easy humidity calculations and conversions on the go. Available from Google Play Store, just follow the link to download.