Online Tool Store
Number List Summer
Paste a list of numbers and instantly get the sum, average, count, minimum, and maximum — parsed from lines, commas, or spaces in your browser.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
Example shown — replace it with your own list.
Sum
Average
Count
Minimum
Maximum
Ignored (non-numeric)
How the number list summer works
- Paste a list of numbers — from a spreadsheet column, a comma-separated list, or plain text.
- The tool splits the text on line breaks, commas, semicolons, and spaces, then parses each piece as a number.
- Sum, average, count, minimum, and maximum update instantly as you edit the list.
FAQ
What separators can I use between numbers?
Line breaks, commas, semicolons, and spaces are all supported — you can paste a column from a spreadsheet, a comma-separated list, or numbers separated by spaces, and they’ll all be recognized.
What happens if I paste text that isn’t a number?
Anything that isn’t a valid number is skipped and counted separately in the “Ignored” total, so a stray label or header row won’t break your totals — but it won’t be silently included either.
Does it handle negative numbers and decimals?
Yes. Negative numbers (with a leading minus sign) and decimal values are parsed correctly and included in the sum, average, minimum, and maximum.
Is my pasted data uploaded anywhere?
No. All parsing and math happen locally in your browser as you type — nothing is sent to Online Tool Store or stored.
How we compare
| Feature | Online Tool Store | A spreadsheet formula | Calculator app |
|---|---|---|---|
| Paste a whole list at once | ✓ | ✓ | One number at a time |
| No spreadsheet or app needed | ✓ | Requires a spreadsheet | ✓ |
| Shows sum, average, min, and max together | ✓ | Separate formulas | One at a time |
For a quick way to total a pasted list without opening a spreadsheet, the Online Tool Store Number List Summer gives you every key statistic at once.