Google haves some search strings that you use and the results shows instant.
Here is some example on ones i use.

The text in bold you write in the google search field

25 celsius in fahrenheit
25 degrees Celsius = 77 degrees Fahrenheit

20 cm in inches
20 centimeters = 7.87401575 inches

20 cm in feet
20 centimeters = 0.656167979 feet

350 pounds in kilo
350 pounds = 158.757329 kilograms

100 GB in MB
100 gigabytes = 102 400 megabytes

100 MB in kb

100 megabytes = 819 200 kilobits



Write Population and the city or country you want to know the population of.

Population Indonesia
Indonesia — Population: 237,512,352 (July 2008 est.)

Population Bali
Bali — Population: 3,150,000



Write Define and then any word want to know the definition of. Then Google shows the dictionary definition of the word.

Examples:

Define Bali
an island in Indonesia to the east of Java; striking volcanic scenery; culture is known for elaborate dances and rituals and for handicrafts

Define Lombok
Lombok (population 2,950,105 in 2005) is an island in West Nusa Tenggara province, Indonesia. It is part of the chain of the Lesser Sunda Islands ...

Define Jakarta
capital and largest city of Indonesia; located on the island of Java; founded by the Dutch in 17th century


Google Currency Converter

1 USD in IDR
1 U.S. dollar = 10 101.0101 Indonesian rupiahs

1 EUR in IDR
1 Euro = 14 282.8283 Indonesian rupiahs


Write Time and then the place you want to know their local time and Google Time shows you just that.

time Jakarta
7:45am Saturday (WIT) - Time in Jakarta, Sumatra

time Bali
bali time
8:45am Saturday (CIT) - Time in Bali, Central Indonesia


Write Weather and then the place you want to know their local weather and Google Weather shows you a forecast for the next 4 days.

Weather Bali
26°C | °F
Current: Partly Cloudy
Wind: W at 10 km/h
Humidity: 82%
Tue
Partly Sunny
31°C | 24°C
Wed
Chance of Storm
31°C | 25°C
Thu
Chance of Storm
31°C | 25°C
Fri
Chance of Storm
31°C | 26°C