Sum Calculator
Quickly total a list of numbers, separated by commas.
Calculator
Use the Sum Calculator
Result
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Formula
Σx
Step-by-step
- 1
Enter values
List your numbers, separated by commas.
- 2
Read the total
All values are added together.
Worked example
Example input: numbers: 1,2,3,4
Result: 10
Related tools
- Average Calculator
Mean of the same list.
Frequently asked questions
How do I enter the numbers?
Separate the list with commas, for example 12, 5.5, 30. Decimals and negatives are accepted, spaces are trimmed, and any entry that is not a valid number is skipped rather than breaking the total.
Why does my money total look like 0.30000000000000004?
That is normal computer arithmetic, not a calculator bug: 0.1 + 0.2 in binary floating point gives that exact string. The calculator shows the true computed sum instead of hiding the artifact; round to 2 decimals if the money report needs it.
What else can I do with the same list?
The average, median, and mode calculators accept the identical comma-separated format. For the list 12, 5.5, 30 the sum is 47.5, the mean is about 15.83, and the median is 12 — handy for comparing different views of one dataset.