Sum Calculator

About this calculator

This tool adds every number in a list and returns the running total, along with a count of how many values were entered and their average. It accepts numbers separated by commas, spaces or new lines, so you can paste a column straight out of a spreadsheet or receipt without reformatting it first.

Bookkeepers reconciling a stack of invoices, students checking a homework total, and anyone splitting a bill or tallying a shopping list use it to skip manual addition and the risk of a dropped digit. Negative numbers and decimals are handled the same way as whole numbers, so it works equally well for a list of expenses or a set of temperature readings.