Calculate Percentages

Calculate Percentages takes a list of numbers and shows what percent each one contributes to the total. It’s ideal for understanding distributions, building charts, or running quick numeric analysis all live in your browser.

Paste your input above or import a file below.
No file chosen
Supported file types: .txt, .csv, .tsv, .log, .json, .xml, .md, .ini, .yaml, .yml, .html, .htm, .css
Total items: 0
Options
Include total sum
Round percentages
Maximize output

How to Use:

  1. Enter numbers in the input box, one per line.
  2. Or import a file (.txt, .csv, or .log) using the Choose File button.
  3. Each value is added to a running total.
  4. The tool calculates the percentage share of each number.
  5. Results update instantly in the output box.
  6. Use Copy Output or Export to File to save your data.
  7. Click Clear All to reset the inputs and start fresh.

What Calculate Percentages can do:

This tool adds up all the numbers in your input and calculates how much each number contributes to the total as a percentage. It handles decimals, ignores empty lines, and updates live as you type or import.

You’ll see formatted results like: 25: 25.00%, showing the original number and its contribution. A counter shows how many valid items were included.

Example:

Input:

5
25
75
100

Output:

5: 2.50%
25: 12.50%
75: 37.50%
100: 50.00%

Common Use Cases:

Use this tool for pie chart prep, data reporting, percentage breakdowns, or comparing numeric values. Whether you’re working on data summaries or classroom exercises, it saves time and gives clean, accurate results.

Useful Tools & Suggestions:

Once you’ve worked out a few percentages, Calculate the Mean can help you find the average across all your values. And if you’re comparing spread or looking for consistency, Variance Calculator gives you a sense of how tightly your numbers cluster.

Related Tools