Weather & air
tools and calculators.
6 practical tools with clear inputs and explanations. Choose a tool below, or explore a role-based toolbox for a collection that fits your day.
Humidity & dew point
Translate relative humidity and dew point with an over-water model.
Vapour pressure deficit
Compare air and leaf saturation pressure with actual air moisture.
Wind chill calculator
Estimate the NWS wind-chill index within its stated input range.
Heat index calculator
Combine air temperature and humidity using the NWS calculation.
Wind direction & components
Convert meteorological wind direction into east/north components, or back.
Dry-air sound speed
Estimate ideal sound speed from a supplied air temperature.