DEW POINT · SURFACE · COATING
Coating Dew Point Calculator
Enter air temperature, relative humidity, and surface temperature to calculate dew point and the surface-to-dew-point temperature difference.
Project Details
Optional details for saved records, CSV export, and print.
Measurements
Take the readings at the same location and as close together in time as practical.
For this approximation: -49 to 140 °F.
Enter a value greater than 0 and no more than 100%.
Measured temperature of the surface to be coated.
Your Product or Project Requirement
Optionally enter the required minimum difference between surface temperature and dew point. No default requirement is preset.
Important: This calculator does not determine whether coating application is permitted. Follow the product data sheet, project specifications, instrument accuracy, and actual jobsite conditions.
Tool Actions
Calculate dew point, save this measurement in your browser, or load a previous measurement.
Your entries are stored only in this browser and are not sent to an external server.