[vzaliva]

It is nice but it could not beat the power of Wolfram Alpha. The way I use it is from Firefox: 1. Add Search Engine via https://addons.mozilla.org/en-US/firefox/addon/wolfram-alpha... 2. Type = followed by expression in your address bar

[manuelmoreale]

I'll add to this—because WA is awesome—that if you're on Mac you can use Alfred (https://www.alfredapp.com) and Ask WA directly from your desktop and it will open the result on your default browser.