May some people still do not know about calculator in Google. Yes, there is. It’s called GoogleCalc. Actually, this is not a new thing, Google has this feature for a long time. See this to knowing more.
You can make count in various format, like length measurements, mathematical counting, even a currency.
For example: 1 cm in yard or 100 cents in dollars
And good news is, you shouldn’t have to type it correctly in grammatical. Such, 1 cent in dollar or 1 m in cm. GoogleCalc still can recognizes what are you looking for.