Can I use decimal numbers?

Yes! The calculator supports both whole numbers and decimals. You can enter numbers like 1.5, 2.75, 0.333, etc. The precision is maintained in the results.

Is my data stored or transmitted?

No, your data is completely private. All calculations happen locally in your browser. We don't store, transmit, or have access to any of the numbers you enter.

Sum Calculator

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计算数字的总和、计数和平均值。支持CSV/Excel格式数据导入。

Frequently Asked Questions

How do I use the sum calculator?

Simply enter your numbers separated by commas (,，), spaces, or new lines. You can also copy and paste data directly from Excel or CSV files. Click Calculate to get the sum, count, and average.

What formats are supported?

The calculator supports numbers separated by commas (,，), spaces, tabs, or new lines. You can paste data directly from Excel spreadsheets, CSV files, or any text format.

Is there a limit to how many numbers I can calculate?

The calculator can handle up to 10,000 characters of input, which typically allows for thousands of numbers depending on their size.

Can I download the results?

Yes! You can download your calculation results as CSV or JSON files. You can also copy individual values like the sum, average, or count to your clipboard.