Humidity calculations and conversions made easy – online, offline and on the go Humidity Calculator makes complex manual calculations and conversions a thing of the past. Register to start the Vaisala Humidity Calculator 5.0 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. 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 The new user interface works on any operating system with modern browser support - tested with IE9+, Chrome, Firefox, and Safari. Also tested with Android, iOS and Windows mobile devices. Eight languages are available: English Chinese Dutch Finnish French German Japanese Portuguese No more installing software for offline use - just bookmark the calculator page or add it to the home screen on your mobile device. Email Address * Interest Area * -- Please Select -- Agrometeorology Airplane Weather Safety Airport Weather Ambient or High Humidity Processes Atmospheric and Meteorological Research Automotive Manufacturing Processes Ballistic, Naval and Tactical Weather Biogas Production Bio-Decontamination Processes Compressed Air Concrete and Construction Food and Beverage Processes Gas Turbines and Combustion Engines Greenhouses and Indoor Agriculture HVAC & Indoor Air Quality Hydrology Industrial Research Laboratories and Facilities Life Science Laboratories and Facilities Life Science Equipment Low Humidity Processes (under 10% RH) Lubrication and Hydraulic Systems Museums, Archives and Libraries Off-Shore and Ship Weather Measurement On-Shore Harbour Weather Operational Weather Observations and Forecasting Other Industrial Measurement Other Weather or Environmental Measurement Outdoor Air Quality Power Transmission Rail Weather Renewable Weather Energy Development Renewable Weather Energy Operation Road Weather Urban Meteorology Warehouses and Cargo Containers Wind Turbine Manufacturing Country * --Please Select-- United States United Kingdom Canada China India Japan Australia Brazil France Germany Finland -------------- Afghanistan Åland Islands Albania Algeria American Samoa Andorra Angola Anguilla Antarctica Antigua and Barbuda Argentina Armenia Aruba Australia Austria Azerbaijan Bahamas Bahrain Bangladesh Barbados Belarus Belgium Belize Benin Bermuda Bhutan Bolivia Bosnia and Herzegovina Botswana Bouvet Island Brazil Brit/Indian Ocean Terr. Brunei Darussalam Bulgaria Burkina Faso Burundi Cambodia Cameroon Canada Cape Verde Cayman Islands Central African Republic Chad Chile China Christmas Island Cocos (Keeling) Islands Colombia Comoros Congo Congo, The Dem. Republic Of Cook Islands Costa Rica Côte D'Ivoire Croatia Cuba Cyprus Czech Republic Denmark Djibouti Dominica Dominican Republic Ecuador Egypt El Salvador Equatorial Guinea Eritrea Estonia Ethiopia Falkland Islands Faroe Islands Fiji Finland France French Guiana French Polynesia French Southern Terr. Gabon Gambia Georgia Germany Ghana Gibraltar United Kingdom Greece Greenland Grenada Guadeloupe Guam Guatemala Guinea Guinea-Bissau Guyana Haiti Heard/McDonald Isls. Honduras Hong Kong Hungary Iceland India Indonesia Iran Iraq Ireland Israel Italy Jamaica Japan Jordan Kazakhstan Kenya Kiribati Korea (North) Korea (South) Kuwait Kyrgyzstan Laos Latvia Lebanon Lesotho Liberia Libya Liechtenstein Lithuania Luxembourg Macau Macedonia Madagascar Malawi Malaysia Maldives Mali Malta Marshall Islands Martinique Mauritania Mauritius Mayotte Mexico Micronesia Moldova Monaco Mongolia Montenegro Montserrat Morocco Mozambique Myanmar N. Mariana Isls. Namibia Nauru Nepal Netherlands Netherlands Antilles New Caledonia New Zealand Nicaragua Niger Nigeria Niue Norfolk Island Norway Oman Pakistan Palau Palestinian Territory, Occupied Panama Papua New Guinea Paraguay Peru Philippines Pitcairn Poland Portugal Puerto Rico Qatar Reunion Romania Russian Federation Rwanda Saint Kitts and Nevis Saint Lucia Samoa San Marino Sao Tome/Principe Saudi Arabia Senegal Serbia Seychelles Sierra Leone Singapore Slovak Republic Slovenia Solomon Islands Somalia South Africa Spain Sri Lanka St. Helena St. Pierre and Miquelon St. Vincent and Grenadines Sudan Suriname Svalbard/Jan Mayen Isls. Swaziland Sweden Switzerland Syria Taiwan Tajikistan Tanzania Thailand Timor-Leste Togo Tokelau Tonga Trinidad and Tobago Tunisia Turkey Turkmenistan Turks/Caicos Isls. Tuvalu Uganda Ukraine United Arab Emirates United States US Minor Outlying Is. Uruguay Uzbekistan Vanuatu Vatican City Venezuela Viet Nam Virgin Islands (British) Virgin Islands (U.S.) Wallis/Futuna Isls. Western Sahara Yemen Zambia Zimbabwe State or Province * --Please Select-- Other - not US or CA Alaska Alabama Arkansas Arizona California Colorado Connecticut D.C. Delaware Florida Micronesia Georgia Hawaii Iowa Idaho Illinois Indiana Kansas Kentucky Louisiana Massachusetts Maryland Maine Michigan Minnesota Missouri Marianas Mississippi Montana North Carolina North Dakota Nebraska New Hampshire New Jersey New Mexico Nevada New York Ohio Oklahoma Oregon Pennsylvania Rhode Island South Carolina South Dakota Tennessee Texas Utah Virginia Vermont Washington Wisconsin West Virginia Wyoming Alberta Manitoba British Columbia New Brunswick Newfoundland and Labrador Nova Scotia Northwest Territories Nunavut Ontario Prince Edward Island Quebec Saskatchewan Yukon Territory First Name * Last Name * Company * Title Business Phone I accept marketing emails from Vaisala By submitting this form you acknowledge Vaisala’s Privacy Policy You can manage your preferences here Version history of the PC application Version 3.1 2014-02-08 Fixed a bug in the pressure unit (psig) conversion. New rounding function to improve calculation accuracy at extreme conditions. Minor user interface improvements. Version 3.0 2013-08-27 Entirely new calculation engine. New calculated parameters: enthalpy, specific volume, density. Replaced Basic and Advanced tabs with a customizable user interface. End user can now decide which measurement parameters are shown on the screen Version 2.2 2009-11-23 Fixed a calculation bug related to user changing both ambient conditions (T, P) at the same time. Now re-calculation happens immediately after condition has been changed. Fixed a bug in language negotiation that resulted in "Locale not found" errors in some localization combinations. New Vaisala visuals. Version 2.1 2008-04-23 Fixed a calculation bug related to user changing ambient conditions (T, P). Now all values are calculated based on new ambient conditions. Version 2.0 2008-04-08 Wet-bulb calculation added. User can insert custom psychrometer coefficients. All values are calculated after changes in ambient conditions (T, P, gas type). Maximum ambient temperature increased to +373 °C (+703 °F). Portuguese localization added. Version 1.3 2007-06-28 Fixed a bug in pressure unit conversion when converting to or from mmHg/Torr. Version 1.2 2007-04-05 Improved accuracy of vapor pressure calculation in high temperatures. Version 1.1.1 2007-02-01 Fixed a calculation bug related to using custom gases. Version 1.1 2007-01-15 Comma can be used as decimal separator in addition to full stop. Improved calculation formula for natural gas in high pressures (above 40 bar). Print button introduced. Use to print the whole calculator screen. Copy values button introduced. Use to copy/paste calculated values to other programs, e.g. Microsoft Excel. Switching from Basic to Advanced mode does not reset the calculation. Input error messages are displayed in selected units. E.g. Temperature in Celsius or Fahrenheit.
Humidity calculations and conversions made easy – online, offline and on the go Humidity Calculator makes complex manual calculations and conversions a thing of the past.
Register to start the Vaisala Humidity Calculator 5.0 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. 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 The new user interface works on any operating system with modern browser support - tested with IE9+, Chrome, Firefox, and Safari. Also tested with Android, iOS and Windows mobile devices. Eight languages are available: English Chinese Dutch Finnish French German Japanese Portuguese No more installing software for offline use - just bookmark the calculator page or add it to the home screen on your mobile device. Email Address * Interest Area * -- Please Select -- Agrometeorology Airplane Weather Safety Airport Weather Ambient or High Humidity Processes Atmospheric and Meteorological Research Automotive Manufacturing Processes Ballistic, Naval and Tactical Weather Biogas Production Bio-Decontamination Processes Compressed Air Concrete and Construction Food and Beverage Processes Gas Turbines and Combustion Engines Greenhouses and Indoor Agriculture HVAC & Indoor Air Quality Hydrology Industrial Research Laboratories and Facilities Life Science Laboratories and Facilities Life Science Equipment Low Humidity Processes (under 10% RH) Lubrication and Hydraulic Systems Museums, Archives and Libraries Off-Shore and Ship Weather Measurement On-Shore Harbour Weather Operational Weather Observations and Forecasting Other Industrial Measurement Other Weather or Environmental Measurement Outdoor Air Quality Power Transmission Rail Weather Renewable Weather Energy Development Renewable Weather Energy Operation Road Weather Urban Meteorology Warehouses and Cargo Containers Wind Turbine Manufacturing Country * --Please Select-- United States United Kingdom Canada China India Japan Australia Brazil France Germany Finland -------------- Afghanistan Åland Islands Albania Algeria American Samoa Andorra Angola Anguilla Antarctica Antigua and Barbuda Argentina Armenia Aruba Australia Austria Azerbaijan Bahamas Bahrain Bangladesh Barbados Belarus Belgium Belize Benin Bermuda Bhutan Bolivia Bosnia and Herzegovina Botswana Bouvet Island Brazil Brit/Indian Ocean Terr. Brunei Darussalam Bulgaria Burkina Faso Burundi Cambodia Cameroon Canada Cape Verde Cayman Islands Central African Republic Chad Chile China Christmas Island Cocos (Keeling) Islands Colombia Comoros Congo Congo, The Dem. Republic Of Cook Islands Costa Rica Côte D'Ivoire Croatia Cuba Cyprus Czech Republic Denmark Djibouti Dominica Dominican Republic Ecuador Egypt El Salvador Equatorial Guinea Eritrea Estonia Ethiopia Falkland Islands Faroe Islands Fiji Finland France French Guiana French Polynesia French Southern Terr. Gabon Gambia Georgia Germany Ghana Gibraltar United Kingdom Greece Greenland Grenada Guadeloupe Guam Guatemala Guinea Guinea-Bissau Guyana Haiti Heard/McDonald Isls. Honduras Hong Kong Hungary Iceland India Indonesia Iran Iraq Ireland Israel Italy Jamaica Japan Jordan Kazakhstan Kenya Kiribati Korea (North) Korea (South) Kuwait Kyrgyzstan Laos Latvia Lebanon Lesotho Liberia Libya Liechtenstein Lithuania Luxembourg Macau Macedonia Madagascar Malawi Malaysia Maldives Mali Malta Marshall Islands Martinique Mauritania Mauritius Mayotte Mexico Micronesia Moldova Monaco Mongolia Montenegro Montserrat Morocco Mozambique Myanmar N. Mariana Isls. Namibia Nauru Nepal Netherlands Netherlands Antilles New Caledonia New Zealand Nicaragua Niger Nigeria Niue Norfolk Island Norway Oman Pakistan Palau Palestinian Territory, Occupied Panama Papua New Guinea Paraguay Peru Philippines Pitcairn Poland Portugal Puerto Rico Qatar Reunion Romania Russian Federation Rwanda Saint Kitts and Nevis Saint Lucia Samoa San Marino Sao Tome/Principe Saudi Arabia Senegal Serbia Seychelles Sierra Leone Singapore Slovak Republic Slovenia Solomon Islands Somalia South Africa Spain Sri Lanka St. Helena St. Pierre and Miquelon St. Vincent and Grenadines Sudan Suriname Svalbard/Jan Mayen Isls. Swaziland Sweden Switzerland Syria Taiwan Tajikistan Tanzania Thailand Timor-Leste Togo Tokelau Tonga Trinidad and Tobago Tunisia Turkey Turkmenistan Turks/Caicos Isls. Tuvalu Uganda Ukraine United Arab Emirates United States US Minor Outlying Is. Uruguay Uzbekistan Vanuatu Vatican City Venezuela Viet Nam Virgin Islands (British) Virgin Islands (U.S.) Wallis/Futuna Isls. Western Sahara Yemen Zambia Zimbabwe State or Province * --Please Select-- Other - not US or CA Alaska Alabama Arkansas Arizona California Colorado Connecticut D.C. Delaware Florida Micronesia Georgia Hawaii Iowa Idaho Illinois Indiana Kansas Kentucky Louisiana Massachusetts Maryland Maine Michigan Minnesota Missouri Marianas Mississippi Montana North Carolina North Dakota Nebraska New Hampshire New Jersey New Mexico Nevada New York Ohio Oklahoma Oregon Pennsylvania Rhode Island South Carolina South Dakota Tennessee Texas Utah Virginia Vermont Washington Wisconsin West Virginia Wyoming Alberta Manitoba British Columbia New Brunswick Newfoundland and Labrador Nova Scotia Northwest Territories Nunavut Ontario Prince Edward Island Quebec Saskatchewan Yukon Territory First Name * Last Name * Company * Title Business Phone I accept marketing emails from Vaisala By submitting this form you acknowledge Vaisala’s Privacy Policy You can manage your preferences here
Version history of the PC application Version 3.1 2014-02-08 Fixed a bug in the pressure unit (psig) conversion. New rounding function to improve calculation accuracy at extreme conditions. Minor user interface improvements. Version 3.0 2013-08-27 Entirely new calculation engine. New calculated parameters: enthalpy, specific volume, density. Replaced Basic and Advanced tabs with a customizable user interface. End user can now decide which measurement parameters are shown on the screen Version 2.2 2009-11-23 Fixed a calculation bug related to user changing both ambient conditions (T, P) at the same time. Now re-calculation happens immediately after condition has been changed. Fixed a bug in language negotiation that resulted in "Locale not found" errors in some localization combinations. New Vaisala visuals. Version 2.1 2008-04-23 Fixed a calculation bug related to user changing ambient conditions (T, P). Now all values are calculated based on new ambient conditions. Version 2.0 2008-04-08 Wet-bulb calculation added. User can insert custom psychrometer coefficients. All values are calculated after changes in ambient conditions (T, P, gas type). Maximum ambient temperature increased to +373 °C (+703 °F). Portuguese localization added. Version 1.3 2007-06-28 Fixed a bug in pressure unit conversion when converting to or from mmHg/Torr. Version 1.2 2007-04-05 Improved accuracy of vapor pressure calculation in high temperatures. Version 1.1.1 2007-02-01 Fixed a calculation bug related to using custom gases. Version 1.1 2007-01-15 Comma can be used as decimal separator in addition to full stop. Improved calculation formula for natural gas in high pressures (above 40 bar). Print button introduced. Use to print the whole calculator screen. Copy values button introduced. Use to copy/paste calculated values to other programs, e.g. Microsoft Excel. Switching from Basic to Advanced mode does not reset the calculation. Input error messages are displayed in selected units. E.g. Temperature in Celsius or Fahrenheit.
Version 3.1 2014-02-08 Fixed a bug in the pressure unit (psig) conversion. New rounding function to improve calculation accuracy at extreme conditions. Minor user interface improvements.
Version 3.0 2013-08-27 Entirely new calculation engine. New calculated parameters: enthalpy, specific volume, density. Replaced Basic and Advanced tabs with a customizable user interface. End user can now decide which measurement parameters are shown on the screen
Version 2.2 2009-11-23 Fixed a calculation bug related to user changing both ambient conditions (T, P) at the same time. Now re-calculation happens immediately after condition has been changed. Fixed a bug in language negotiation that resulted in "Locale not found" errors in some localization combinations. New Vaisala visuals.
Version 2.1 2008-04-23 Fixed a calculation bug related to user changing ambient conditions (T, P). Now all values are calculated based on new ambient conditions.
Version 2.0 2008-04-08 Wet-bulb calculation added. User can insert custom psychrometer coefficients. All values are calculated after changes in ambient conditions (T, P, gas type). Maximum ambient temperature increased to +373 °C (+703 °F). Portuguese localization added.
Version 1.1 2007-01-15 Comma can be used as decimal separator in addition to full stop. Improved calculation formula for natural gas in high pressures (above 40 bar). Print button introduced. Use to print the whole calculator screen. Copy values button introduced. Use to copy/paste calculated values to other programs, e.g. Microsoft Excel. Switching from Basic to Advanced mode does not reset the calculation. Input error messages are displayed in selected units. E.g. Temperature in Celsius or Fahrenheit.
