- Wind Chill, Heat Index and Dew Point CalculatorNWS wind chill and heat index, dew point, wet bulb temperature, humidex and apparent temperature from air temperature, humidity and wind speed.humidex calculator
- Pressure Altitude CalculatorPressure altitude, density altitude, altimeter setting and air density from station pressure, elevation and temperature, plus the reverse ISA lookup from altitude.
- Earthquake Magnitude and Energy CalculatorSeismic moment, radiated energy and TNT equivalent from earthquake magnitude, with comparisons to famous earthquakes, magnitude to magnitude energy ratios, and the reverse lookup from energy or moment.