Sum CSV Columns

Sum CSV Columns lets you instantly total all numeric values in each column of your CSV file. Paste or upload a file and get live column totals.

Paste your input above or import a file below.
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Supported file types: .csv, .txt, .tsv, .log
Total characters: 0
Column sums will appear here...

How to Use:

  • Paste your CSV data into the input box, or upload a .csv, .txt, or .tsv file using the Choose File button.
  • The tool detects which columns contain numeric values and adds them up row by row.
  • Click Sum Columns to see the totals displayed below the output box.
  • The tool preserves your original input and highlights the column sums in a readable list.
  • Click Copy Output to copy the raw CSV input.
  • Use Export to File to download your data.
  • Hit Clear All to reset input, output, file name, total display, and character count.
  • Check the Total characters counter to monitor CSV size as you work.

What Sum CSV Columns can do:

Sum CSV Columns is great for quickly analyzing totals in spreadsheet exports. Whether you’re summing scores, expenses, or any numerical data, this tool shows totals for each column with zero setup. It ignores non-numeric fields and works directly in your browser no uploads or third-party software required. You can view results instantly, copy the CSV back out, or download it.

Example:

CSV Input:

name,math,science,history
Alice,90,85,88
Bob,78,92,80
Charlie,85,88,90

Column Totals:

codename: (not numeric)
math: 253
science: 265
history: 258

Common Use Cases:

Use Sum CSV Columns to total grades, sales, attendance, or any set of numeric fields. Perfect for teachers, analysts, developers, or anyone doing quick spreadsheet analysis on the fly.

Useful Tools & Suggestions:

If you’ve got non-numeric cells, Analyze CSV can help flag them before they mess with your totals. And after summing, Average CSV Columns is a solid next step to understand the overall scale.

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