Overview
What Is a Sum Calculator?
This tool adds together any list of numbers you enter, also showing the count and average of the values.
Add up any list of numbers instantly.
This tool adds together any list of numbers you enter, also showing the count and average of the values.
Useful for totaling expenses, adding up scores, or any quick list-addition task.
Type numbers separated by commas or spaces.
The total updates automatically as you type.
Separate numbers with commas or spaces - both work.
Yes, decimal numbers are fully supported.
Yes, negative numbers are subtracted from the running total.
No practical limit.
Yes, the tool displays count and average alongside the sum.
Non-numeric entries are ignored automatically.
Yes, pasting a column of numbers works as long as they're separated by spaces, commas, or line breaks.
No, calculations happen entirely in your browser.
This shows the sum as the primary result; the average calculator focuses on the mean.
Yes, completely free with no sign-up required.