SumThing

If you have ever used Excel and its functions, then you have already tried the SUM one. As you might remember, in Excel, you must select the function, then the columns, and after pressing Enter, the sum will show up. But there is a Chrome extension that can automatically do that, and even more directly, on websites. SumThing is lightweight, straightforward to use, and it's not only for calculating the sum of selected cells, columns, or rows, as it will also reveal the results of other mathematical operations.

To use this extension, you must be on a site that presents a chart or a table. Otherwise, the app can't work because it can't detect the numbers that you want to sum up. When you're on a supported webpage, you can activate the addon by clicking its icon in the toolbar. After that, simply select rows, columns, or specific cells, and SumThing will calculate the sum and even more. Another interesting feature is that this extension also takes into account negative sums, as well as currency and varying number formats.

The extension goes beyond calculating the sum, and it also reveals the results of other mathematical operations such as the average, max, min, and COUNTA. For its part, COUNTA is a function that simply counts all cells that contain information, even though they contain errors or have no text. COUNTA, however, doesn't take empty cells into consideration. The min and max, as their names imply, show the lowest and, respectively, the highest values. In conclusion, SumThing is like having Excel at your fingertips, even when navigating from one site to another. When you need the extension, click its icon and use it to tally up cells, columns, or rows directly on webpages.