Calculate a Running Sum makes it easy to take a list of numbers and turn it into a line-by-line cumulative total. As you enter values, the tool adds them up one by one and shows the running total for each step. Whether you’re tracking progress, building a ledger, or doing quick math, this tool handles it live with zero effort.
How to Use:
- Paste your list of numbers into the input box.
- Or import a file using the Choose File button.
- Use the toggles to trim whitespace or skip empty lines.
- The output updates live on the right with running totals.
- Copy or export the result when you’re ready.
What Calculate a Running Sum can do:
This tool reads numbers line by line and adds each one to the total so far. So if you enter 5, 10, and -3, you’ll see 5, then 15, then 12 the total growing (or shrinking) with each line. It supports decimal values and works with both positive and negative input.
The Options box gives you full control over how input is processed. If Trim whitespace is on, it removes any leading or trailing spaces that might cause parsing issues. If Ignore empty lines is active, blank rows are skipped entirely instead of producing errors or “Invalid” entries. These settings make it easy to clean up pasted input from messy sources or spreadsheets.
Everything updates in real time as you type or import, so you can instantly verify and use the result.
Example:
Input:
5
10
-3
4.5
2Output:
5
15
12
16.5
18.5Common Use Cases:
Calculate a Running Sum is great for tracking progress, balancing totals, processing expenses, or understanding cumulative changes over time. Whether you’re handling budgets, scores, or time logs, this tool helps you get the totals line by line fast and clean. Just paste and go.
Useful Tools & Suggestions:
After setting up a running sum, Calculate a Running Difference gives a nice contrast to track how values are shifting. And if you want to keep just the essentials, Delete Empty List Items can help tidy things up before or after the math.