🌎 Earth & Weather

🌫️Air Density Calculator Calculate the density of air from temperature, pressure and humidity, with density altitude, free online. 🌡️Apparent Temperature Calculator Calculate the "feels like" temperature from temperature, humidity and wind, free online. 🌬️Beaufort Wind Scale Calculator Convert a wind speed to the Beaufort scale number with a description of sea and land conditions, free online. ☁️Cloud Base Height Calculator Estimate the height of the cloud base from temperature and dew point, free online. 💦Dew Point Calculator Calculate dew point temperature from air temperature and relative humidity, free online. 🧭Distance Between Coordinates Calculator Calculate the great-circle distance, bearing and midpoint between two latitude/longitude points, free online. 🌋Earthquake Energy Calculator Calculate the energy released by an earthquake from its moment magnitude, free online. 🌽Growing Degree Days (GDD) Calculator Accumulate growing degree days from daily maximum and minimum temperatures to time planting, pests and crop stages, free online. 🥵Heat Index Calculator Calculate the heat index "feels like" temperature from air temperature and humidity, free online. 🔭Horizon & Line-of-Sight Distance Calculator Calculate how far you can see to the horizon from a given height and the distance at which two objects are visible to each other, free online. 🥵Humidex Calculator Calculate the Canadian humidex discomfort index, free online. ⚡Lightning Distance Calculator Estimate how far away a lightning strike is from the thunder delay, free online. 🛩️Pressure & Density Altitude Calculator Calculate pressure altitude and density altitude from air pressure and temperature, free online. 🌧️Rainfall Volume Calculator Calculate the total volume of rainwater collected over an area, free online. 📉Sea-Level Pressure Correction Calculator Convert a station (barometer) pressure reading to sea-level pressure using elevation and temperature, free online. ❄️Snow Depth to Water Equivalent Calculator Convert snow depth to liquid water equivalent and estimate the weight of snow on a roof, free online. ☀️Solar Noon Sun Angle Calculator Find the sun's elevation at solar noon for a latitude and date, plus the day length estimate, free online. ⛰️Temperature at Altitude (Lapse Rate) Calculator Estimate the air temperature and pressure at a different altitude using the environmental lapse rate, free online. 🧴UV Exposure Time Calculator Estimate how long it takes to sunburn at a given UV index, free online. 🌡️Wet-Bulb Temperature & Heat Stress Calculator Calculate the wet-bulb temperature from air temperature and relative humidity and see the heat-stress level, free online. 🥶Wind Chill Calculator Calculate wind chill temperature from air temperature and wind speed, free online. 🌀Wind Turbine Power Output Calculator Estimate the power and yearly energy of a wind turbine from wind speed and rotor diameter, free online.