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Calculators and Conversion Tables

Weather and climate data are presented in various meteorological units. NCDC provides access to calculators and conversion tables to help people understand and interpret the data.

  • Meteorological Calculator
    NOAA's National Weather Service Meteorological Calculator web page provides calculations and conversions for temperatures, wind chill, relative humidity, wind speed, or heat index.
  • Land Beaufort Scale
    The Land Beaufort Scale is a system for estimating wind speed based on observed conditions on land.
  • Marine Beaufort Scale
    The Marine Beaufort Scale is a system for estimating wind speed based on observed conditions at sea.
  • Snowfall to Meltwater Conversion Table
    The Snowfall to Meltwater Conversion Table is a guide for estimating the water equivalency of newly fallen snow for various temperature ranges.