## Length

 1 in = 2.54 cm = 0.0254 m 1 ft = 30.48 cm = 0.3048 m 1 yard = 91.44 cm = 0.9144 m 1 mile = 1.6093 Km = 1609.3 m

 Use engineering units. For example: 5.23e-7 From: kilometers meters centimeters milimeters microns angstroms miles yards feet inches astronomical units light years To: kilometers meters centimeters milimeters microns angstroms miles yards feet inches astronomical units light years

## Area

 1 in2 = 6.4516 cm2 1 ft2 = 0.0929 m2 1 acre = 0.4047 hectares = 4047 m2

 Use engineering units. For example: 5.23e-7 From: sq kilometers sq meters sq centimeters sq millimeters acres hectares sq miles sq yards sq feet sq inches To: sq kilometers sq meters sq centimeters sq millimeters acres hectares sq miles sq yards sq feet sq inches

## Volume

 1 in3 = 16.387 cm3 1 ft3 = 0.0283 m3 1 us f.oz = 29.574 ml 1 imp f.oz = 28.41 ml 1 us gal = 3.7854 l 1 imp gal = 4.546 l

 Use engineering units. For example: 5.23e-7 From: cu meters liters cu centimeters cu yards cu feet cu inches barrels (Brit) barrels (US oil) bushels (Brit) bushels (US) gallons (Brit) gallons (US, dry) gallons (US, liq) ounces (Brit, flu) ounces (US, flu) pints (Brit) pints (US, dry) pints (US, liq) quarts (Brit) quarts (US, dry) quarts (US, liq) cups tablespoons teaspoons To: cu meters liters cu centimeters cu yards cu feet cu inches barrels (Brit) barrels (US oil) bushels (Brit) bushels (US) gallons (Brit) gallons (US, dry) gallons (US, liq) ounces (Brit, flu) ounces (US, flu) pints (Brit) pints (US, dry) pints (US, liq) quarts (Brit) quarts (US, dry) quarts (US, liq) cups tablespoons teaspoons

## Weight

 1 OZ = 28.35 g 1 lb = 0.4536 kg = 453.6 g 1 imp ton = 1016 kg

 Use engineering units. For example: 5.23e-7 From: tons (metric) kilograms grams milligrams pounds ounces To: tons (metric) kilograms grams milligrams pounds ounces

## Temperature

 oF = oC*1.8 + 32 oC = (oF - 32) / 1.8 oR = oF + 459.67 K = oC + 273.15

 Use engineering units. For example: 5.23e-7 From: ° Fahrenheit ° Celsius Kelvin To: ° Fahrenheit ° Celsius Kelvin