Google Calculator

Google calculator has been around now for the last three and a half years, so a post on this Google service isn’t exactly groundbreaking.I was just looking for a quick currency conversion, and the easiest way to accomplish this nowadays is Google’s Calculator shortcut.
Here are a bunch of fun problems that can be quickly solved by utilizing some cool Google calculation tricks:

• Conversions:
  • What is the speed of light in miles per hour?
  • How many Mexican Pesos are in 300 U.S. dollars?
  • How many megabytes in a terabyte?
  • What is the mass of planet Earth in pounds?
  • What is the mass of the Sun in pounds?
  • What is 75 degrees Fahrenheit in Celsius?
  • What is 12,345 converted to in binary?
  • What is the roman numeral representation of 1,197?
  • How many minutes are in a decade?
  • How many ounces are in 5 gallons?
• Calculations
  • What is 6 to the power of 25?
  • What is the square root of 123,456,789?
  • What is 1 and 1?
• Odd
• What is the answer to life, the universe, and everything?

• How long can you play a 30GB iPod without repeating a song? Answer: 18.2 days - How much hard drive space does one hour of 128kbps MP3s consume? Answer: 56.25 megabytes
• How many seconds in a decade? Answer: 315,569,260
• 98.6 degrees Fahrenheit in Celsius? Answer: 37 degrees
• How many feet in a smoot? Answer: 5.58 (via Ryan)
• What's the answer to life, the universe and everything? Answer: 42
• What's the answer to life, the universe and everything multiplied by the speed of light divided by three teaspoons? Answer: 8.51523871 × 10¹⁴ m^-2 s^-1
• What's the speed of a Delorean going back in time? Answer: 47,600,819,200 m³ kg/s⁴