Result
Enter values and select Calculate.
Formula and method
The calculator parses every token as a complete finite number, then uses Neumaier compensated summation to reduce ordinary floating-point accumulation error. It adds only the finite list you supply; it does not evaluate sigma notation or infinite, arithmetic, or geometric series.
Worked example
For 1, 2, 3, and 4, the sum is 10. For 0.1, 0.2, and 0.3, the displayed sum is 0.6.
Inputs and boundaries
- The list may contain integers, decimals, negatives, zero, and scientific notation.
- Malformed tokens are rejected rather than partially parsed or silently omitted.
- The input limit is 10,000 values.
- Mean Calculator retains arithmetic-average intent.
Inputs and results stay in this browser and are not sent to analytics, storage, URLs, or network services.