Calculate the sum, average, median, range, and standard deviation of any list of numbers.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. Zero egress.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
Enter numbers separated by newlines, commas, spaces, or paste mixed text with numbers.
Optionally sort numbers ascending/descending, remove duplicates, or adjust decimal precision.
Review the instant sum, statistical matrix, and running totals, and copy the summary to your clipboard.
Yes, the calculator automatically detects newlines, commas, tabs, semicolons, and spaces.
Yes. Check the 'Extract numbers from mixed text' box to automatically filter and sum all numeric values from articles or bank statements.
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