CalcLasso — Select & Calculate

Select numbers and table ranges on any webpage, then calculate instantly in a private, scroll-friendly overlay.

CalcLasso lets you select numbers directly from webpages and calculate them without copying values into a spreadsheet or calculator. Use CalcLasso to: • Calculate selected numbers on a webpage • Select values from table rows or columns • Find the sum, average, minimum, maximum and count • Review selected values before calculating • Work directly within the current webpage CalcLasso is useful for reviewing financial tables, reports, product lists, invoices and other webpages containing numerical information. Calculations are performed locally in your browser.