• h (hecto) = 100 (prefix)
• H = henry (inductance)
• h = hour (time)
• H20 density (water weight density) = 0.0885472440945 kg/m^2*s^2 (weight density)
• half = 0.5 (prefix)
• hand = 4 in (length)
• hd = hogshead (volume)
• heat = energy (energy)
• Heat Capacity
  • boltzmann (Boltzmann constant) = 1.380622E-23 J/K
  • entropy = heat capacity
  • heat capacity = J/K (category unit)
  • k = boltzmann
• heat capacity = J/K (heat capacity; category unit)
• heat conductivity = thermal conductivity (thermal conductivity)
• heat flow rate = power (power)
• heat flux = heat flux density (heat flux density)
• Heat Flux Density
  • acoustical intensity = heat flux density
  • emitted radiant flux = heat flux density
  • heat flux = heat flux density
  • heat flux density = W/m^2 (category unit)
  • irradiance = heat flux density
  • power to area = heat flux density
  • radiant exitance = heat flux density
  • radiant flux received = heat flux density
  • sound intensity = heat flux density
  • thermal flux = heat flux density
• heat flux density = W/m^2 (heat flux density; category unit)
• Heat Release Rate
  • heat release rate = W/m^3 (category unit)
  • mixing power = heat release rate
• heat release rate = W/m^3 (heat release rate; category unit)
• Heat Transfer Coefficient
  • heat transfer coefficient = W/m^2*K (category unit)
• heat transfer coefficient = W/m^2*K (heat transfer coefficient; category unit)
• hectare = 100 are (area)
• hecto = 100 (prefix)
• hectokilo = 100000 (prefix)
• hefner candle = 0.92 cd (luminous intensity)
• height = length (length)
• hekat (Israeli hekat) = 291 in^3 (volume)
• henry = Wb/A (inductance; derived unit)
• hertz = 1/s (frequency; derived unit)
• Hg weight density = 133322.368421 kg/m^2*s^2 (weight density)
• hhd = hogshead (volume)
• hk (hectokilo) = 100000 (prefix)
• HK = hefner candle (luminous intensity)
• hogshead = 2 barrel (volume)
• homestead = 0.25 mile^2 (area)
• horsepower = 550 ft*pound*g/sec (power)
• hour = 60 minute (time)
• hp = horsepower (power)
• hr = hour (time)
• hundred = 100 (prefix)
• hundredweight = short hundredweight (mass)
• hyl = gf*s^2/m (mass; derived unit)
• Hz = hertz (frequency)

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