Free · no sign-up · runs in your browser
Add Numbers Online Calculator
Paste a column of figures — invoice line items, homework problems, receipts — and read the correct total as you type. No account, no spreadsheet, no waiting.
Add your numbers
0 numbersPhone tip: this box opens the number pad. Currency symbols, units and labels are cleaned automatically — check the parsed list on the right.
Nothing counted yet — paste or type numbers on the left.
Details — stats & parsed numbers
How it works
Drop in a column copied from a spreadsheet, an invoice or a shopping list. New lines, commas, spaces and + all separate numbers.
The sum recomputes about 120ms after you stop typing, and the parsed list shows every value that was counted.
Spot a mangled value in the chip list, fix the text, then copy the formatted total into your document.
Built for real pasted numbers
"$1,299.00", "12 kg" and "Total: 450" all become plain numbers, and a note tells you exactly how many stray characters were dropped.
A comma grouping three digits is thousands (1,299); 1 234,5 is read as 1234.5. The detected rule is always shown, and the Separator menu overrides it.
Over 20,000 items the page asks before parsing instead of freezing the tab. Counting is capped at 20,000 numbers.
Count, average, smallest and largest for the exact same parsed list — one toggle away.
Thousands grouping and decimal places change only how the total is printed; negatives and decimals are kept exact.
The parser, the running sum and the copy button all run in your browser. Zero network requests, no account, no storage.
FAQ
How do I add a column of numbers quickly?
Select the column in your spreadsheet or document, copy it, and paste it into the box. One number per line is the most reliable format; the total appears immediately.
Why is my comma-separated list read as decimals?
In auto mode a lone comma before one or two digits is treated as a European decimal point (1,5 = 1.5). Choose "Comma" in the Separator menu to force every comma to split numbers instead.
Can I add negative numbers?
Yes. A minus sign directly in front of a value counts as a negative number, so credits and refunds subtract from the total.
Does it handle thousands separators correctly?
Yes. 1,299.00 becomes 1299, 1.234,56 becomes 1234.56, and 1 234,5 becomes 1234.5. The rule that was applied is printed under the input box.
How many numbers can it add?
20,000 numbers per list. Pastes larger than that ask for confirmation first, so a huge paste can never freeze the tab.
Is my data sent anywhere?
No. Everything runs as JavaScript on your own device — the page makes no network requests at all.