Weather and Other Unit Conversions


Celsius (°C) Fahrenheit (°F) Kelvin (K) Rankine (°R)

Dew Point

Temperature (°F) Relative Humidity (%) Dew Point (°F)
Temperature (°C) Relative Humidity (%) Dew Point (°C)

Feels Like

Temperature (°F) Wind (mph) Wind Chill
Temperature (°F) Relative Humidity (%) Humidex
Temperature (°F) Dewpoint (°F) Humidex
Temperature (°C) Wind (km/h) Wind Chill
Temperature (°C) Relative Humidity (%) Humidex
Temperature (°C) Dewpoint (°C) Humidex


Km/hour (km/h) Miles/hour (mph) Knots (kt) Metres/sec. (m/s)


Kilometres (km) Metres (m) Centimetres (cm) Millimetres (mm)
Microns (µm) Angstroms (Ċ) Miles (mi) Yards (yd)
Feet (ft) Inches (in) Nautical miles Astronomical Units (AU)
Light years (ly) Parsec Pica (pi) Point (pt)


kiloPascals (kPa) Millibars (mb) Inches of Mercury (inHg) Centimetres of Mercury (cmHg)
Metres of water (mH2O) Inches of water (inH2O) Atmospheres (atm) Kilogram/centimetre² (kg/cm²)


Milligrams (mg) Points Grains Carats
Grams (g) Scruples Pennyweight Drams
Apothecaries' Drachms Ounces (oz) Troy Ounces Newtons (N)
Troy Pounds Pounds (lb) Kilograms (kg) Stone (lb)
Quarters (qtr) Hundredweight (cwt) US Tons Metric tonnes (t)


Minims Cubic millimetres (mm³) Millilitres (ml) Cubic centimetres (cm³)
Fluid drachms Cubic inches (in³) Imperial Fluid ounces US Fluid ounces
(fl oz)
Gill Cups (c) US Pints (pt) Imperial Pints
Litres (l) US Quarts (qt) US Gallons (gal) Imperial Gallons
Peck Pin Cubic feet (ft³) Bushel
Firkin Kilderkin Barrel (beer) Hogshead
Puncheon Butt Cubic Yard (yd³) Tun
Hectolitres (hl) Cubic metres (m³) Cord


Square millimetres(mm²) Square centimetres(cm²) Square Square Inches (in²) Square Feet (ft²)
Square Yards (yd²) Square metres(m²) Square Rods (rd²) Square Chains (ch²)
Ares (a) Roods (ro) Acres (ac) Hectares (ha)
Square Furlongs (fur²) Square Kilometres(km²) Square Miles (mi²)  

Blodgettville Units

Poppy Seed Barleycorn Inch (in) Nail
Palm Hand Finger Link
Span Foot (ft) Cubit Yard (yd)
Cloth-Yard Ell Fathom (fth) Rod (rd)
Chain (ch) Shackle Bolt Cable
Furlong Statute Mile (sm) Nautical Mile (nm) League

More on Units and Their History Available Here.      

Random Weather Facts

The dew point is the temperature to which air must be cooled, at constant barometric pressure, for water vapor to condense into water. The condensed water is called dew. When the dew point temperature falls below freezing it is called the frost point, as the water no longer creates dew but instead creates frost. The dew point is associated with relative humidity. A high relative humidity indicates that the dew point is closer to the current air temperature. If the relative humidity is 100%, the dew point is equal to the current temperature. Given a constant dew point, an increase in temperature will lead to a decrease in relative humidity.