Number list sum
Number list sum with local processing and strict input validation.
Runs in your browserEvery computation happens in your browser — your data never leaves this device.
Text
Result
The result was generated locally.
Enter text to process
What this tool does
- Transform text locally.
- Process copied text without uploading data.
- Sum space-separated integers or decimal values.
Example
Input
1 2.5 -1
Output
2.5
All processing runs locally and invalid input is rejected explicitly.
Frequently asked questions
Is empty input supported?
Yes, it returns an empty result.
How is invalid input handled?
It returns an explicit invalid-input error.
Are negative numbers and decimals supported?
Yes. Space-separated negative numbers and decimals are included in the sum.
Keywords：数值列表求和Number list sumnum-sumtext encodinglocal tool