Sum Calculator
Paste a list of numbers and get the sum, count, and average
Last updated: September 16, 2026
Paste a spreadsheet column. 1,250 is one thousand two hundred fifty; dollar signs are ignored.
How to use
- Paste a column from Excel or Google Sheets, or type numbers separated by commas, spaces, or new lines.
- Thousands separators stay intact: 1,250 is 1250, not 1 and 250.
- Press ⌘/Ctrl + Enter, then copy the sum, count, and average.
Result actions
Copy or download the tool output, or share a link to Calculate Number Sum.
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How the sum is calculated
Each recognized number is added: Sum = x1 + x2 + … + xn. The tool also reports count, average (sum / count), min, and max.
Worked example
Paste:
Rent 1,250
Groceries $84.20
Utilities 56.80
Recognized values: 1250, 84.20, 56.80. Sum 1391. Count 3. Average 463.67.
Spreadsheet paste
Copy a column or row from Excel or Google Sheets and paste it. Cells become separate numbers. You do not need to strip labels first; "Taxi 18.50" contributes 18.50.
Thousands separators vs lists
| Input | Read as |
|---|---|
1,250 |
1250 |
1,250,000.50 |
1250000.50 |
10, 20, 30 |
10, 20, 30 |
10,20,30 |
10, 20, 30 |
A comma groups thousands only when exactly three digits follow it.
Privacy
Addition runs in your browser. The numbers never go to a server.
FAQ
- How do I sum a column from Excel?
- Select the column, copy it, and paste into the box. Line breaks between cells are treated as separators. The count should match the number of cells you copied.
- Is 1,250 one number or two?
- One number: one thousand two hundred fifty. A comma is a thousands separator when it is followed by three digits. 10, 20, 30 is still three numbers because of the spaces.
- Can I paste amounts with dollar signs?
- Yes. $12.50 is read as 12.50. Euro, pound, and yen signs are stripped the same way.
- Does any of this leave my browser?
- No. The list is added on your device. Nothing is uploaded.