Sum Numbers

This tool finds every number in your pasted text (whole numbers and decimals, including negatives) and reports their count, sum, average, minimum and maximum. It is a quick way to total a column of figures, a list of prices or measurements, without opening a spreadsheet.

Numbers are detected anywhere in the text, whatever separates them (spaces, commas, new lines, or words in between). The result is a small JSON report with the five values, exact for whole numbers and standard floating-point for decimals.

Everything runs entirely locally in your browser (no upload, even offline) - your text never leaves your device. Only numeric tokens are counted; a thousands separator inside a number is not assumed (write 1000, not 1,000), to keep the parsing unambiguous. Ideal for receipts, invoices, grade sheets, donation totals or laboratory measurement series.

Typical use: paste an expense list from an e-mail, amounts from a log or readings from a report and see sum and average in a second - without building a spreadsheet first. Because minimum and maximum come along, outliers and typos (a slipped decimal point) stand out immediately.

Specifications

In 3 steps

1. Paste your text containing numbers.
2. Every number is found and totalled.
3. Download the JSON report (count, sum, average, min, max).

Limitations: Extracts every numeric token (whole numbers, decimals, negatives) and reports count, sum, average, minimum and maximum as JSON. Group separators are not parsed (use 1000 not 1,000). Decimals use standard floating-point.

FAQ

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