Dew Point Calculator

Dew Point Calculator Tool

Have you ever wondered? How do I calculate the dew point? Whether you?re a home meteorologist, a professional meteorologist, or someone just genuinely curious about how nature all comes together – we’ve got a fantastic tool for you! Introducing our Dew Point Calculator, from Zippy Calc. We prioritize speed with all that we do and we want you to have the fastest results possible. That’s why we have you input your local temperature and relative humidity and in a flash, your results appear! We hope you enjoy this tool and can use it for whatever use you need. If you like this one – we have many more like it with the rest of our STEM tools , check them out today!

Dew Point Calculator – A comprehensive guide


Dew point is a crucial factor in understanding our weather patterns. It refers to the temperature at which the air becomes saturated with water vapour, causing dew, fog, or frost to form. It’s at this point, dew point, that the relative humidity becomes 100%. A Dew Point Calculator simplifies the complex calculatons used to find this temperature.

Quick summary:

  • Dew point is the temperature when air becomes saturated with water vapor.
  • The Dew Point Calculator simplifies the complex aspect of finding this temperature.
  • Understanding dew point plays a vital role in weather forecasting and in our daily life.

History of Measuring Dew Point

The concept of measuring the dew point has been around since ancient times. The Romans and Greeks observed that dew and frost appeared when the temperature dropped to a particular point at night. However, it was not until the 19th century with the invention of the hygrometer that quantitative measurements of dew point became possible.

History of Weather Measurements

Measuring weather dates back thousands of years, with the first weather station being established in Korea in 1442. Since then, technology has vastly improved the accuracy and convenience of taking weather measurements. Instruments such as thermometers, barometers, and hygrometers have allowed for precise and consistent measurements.

The Link between Dew Point and Weather Measurements

Knowing the dew point can greatly aid in weather prediction, as it is a direct indicator of the air’s moisture content. A high dew point indicates high humidity and can mean a greater chance of precipitation, fog or high levels of discomfort. Conversely, a low dew point indicates dry, comfortable conditions.

Understanding the relationship between dew point and other weather measurements can give us a more comprehensive picture of the weather conditions we may face. For example, when the temperature is close to the dew point, the relative humidity is high, and condensation is likely, potentially leading to fog or dew.

Common Reasons to Calculate Dew Point

  • Weather forecasting: Meteorologists use dew point measurements to predict when clouds will form or when precipitation is likely.
  • Comfort level assessment: Knowing the dew point can give us an idea of how comfortable or uncomfortable the weather may feel.
  • Building and structural maintenance: Dew point calculations can help identify potential moisture problems in buildings.

Do You Know?

  • The highest dew point ever recorded was 95 degrees Fahrenheit in Saudi Arabia in July 2003.
  • Antarctica holds the record for the lowest dew point of -40 degrees Fahrenheit.
  • Dew point is frequently used in aviation to determine the likelihood of carburetor icing or foggy conditions.
  • When the dew point and temperature are the same, the relative humidity is 100%.
  • Dew point is different from absolute humidity, as it takes temperature into account.
  • The dew point can help fire departments predict the likelihood of wildfires.
  • Concrete drying time can be estimated using the dew point.
  • The hygrometer, an instrument that calculates dew point, was invented in the 19th century.
  • The closest the dew point can get to air temperature is 0.1 degrees Celsius.
  • Dew point measurements are crucial in the brewing industry, as it affects the quality of beer eventually produced.

Zippy Calc Key Benefits

  • FAST

    Optimized for SPEED. We pride ourselves on having FAST calculators available for you. We know you’ve got other important things to do and that’s why we’ve reduced all excess button clicks so you can be in, out, and on your way.


    No charge to you. We get paid and keep the lights on via our advertisers on the site (which we try to make as least intrusive as possible)


    Here’s a tidbit. We include stats and interesting facts alongside of each of our calculators. These may be helpful to you along your way and provide you an insight and link to a resource to help you on your way.


    Chose not to be boring. We’ve found that a lot of our competitors (yes, there are online calculator competitors, can you believe the world we live in) have very BORING websites. We’re not trying to be boring. We want you to have a chuckle.