Kanakku: Online Spreadsheet and Calculator Tool
Kanakku is a Spreadsheet and Calculator rolled into one web application. The application is free to use and currently runs well on IE7+ and Firefox.
You can use the application in a variety of ways. Spreadsheets, mathematical formulas can be written in each cell. These formulas can be evaluated by pressing the enter key. The corresponding answer to the formula will be displayed to you. Simply select the function keys of Kanakku in order to use the type of formula that you need. As of now, Kanakku can handle arithmetic, trigonometric and statistical functions.
You do not need to sign up for the service. You can immediately open your file (currently .csv) in Kanakku and save it in the same format when you’re done. If you’re looking for a free web alternative to desktop spreadsheet applications, Kanakku is one of them. Give it a shot and see if it works well for you.

Watch the Kanakku video tutorial:
Tags: calculator, Kanakku, Spreadsheet
Calories Per Hour
The service also features food calories and nutrition calculator which will display the accumulated calories of the food that you have chosen from their list which is quite a large list categorized by groceries, cuisines, Fast food and Restaurants, Food Brands and 100 Calorie Pack.