Weather Calculator
A set of quick, live weather conversions and calculations — everything updates as you type, with nothing sent off to a server. Useful alongside our Dew Point, Heat Index and Beaufort Scale pages if you want the background on how any of these figures are actually calculated.
Jump to: Temperature · Wind & Beaufort · Pressure · Dew Point · Heat Index · Wind Chill · Compass Direction · Rain & Distance
Temperature Converter
Convert between Celsius, Fahrenheit and Kelvin.
Wind Speed & Beaufort Force
Convert wind speed and see the equivalent Beaufort force.
Beaufort estimate based on the standard land/sea scale — see our full Beaufort Scale page.
Pressure Converter
Convert between hectopascals/millibars, inches of mercury and millimetres of mercury.
Compass Direction
Turn a wind direction in degrees into its 16-point compass name, or the other way round.
Dew Point Calculator
Enter air temperature and relative humidity to estimate the dew point (Magnus-Tetens approximation). See our Dew Point and Humidity pages for what this figure actually means.
Heat Index Calculator
Enter air temperature and relative humidity for the NWS "feels like" Heat Index (Rothfusz regression). Only meaningful above about 27°C (80°F) — see our Heat Index page for the full table and background.
Wind Chill Calculator
Enter air temperature and wind speed for the standard NWS/Environment Canada wind chill formula. Only valid at or below 10°C with a wind speed above about 5km/h.
Rain & Distance Converter
Rainfall depth and horizontal distance conversions.