GOOGLE CONVERSION GUIDE

In Degrees / In Radians

You can convert radians to degrees: 

pi/2 in degrees

You can convert degrees into radians: 

90 degrees in radians

In Hex / In Binary / In Octal / In Decimal

You can convert to each of the given bases: 

16 in hex

16 in octal

16 in binary

0×11 in decimal

You can also use: 

2007 in roman numerals

Distance Conversions

You can use: 

100miles in km

1m in mm

200000 km in light-second

Speed / Time / Temperature

Just some samples: 

100mph in kph

1 month in seconds

280 kelvin in Celsius

50 Fahrenheit in Celsius

Currency

You can use: 

3 € in $

3 euros in dollars

Cooking

You can use: 

3 teaspoons in oz

1 cup + 1 tablespoon in teaspoon