Replace Integer Digits
Swap every occurrence of one digit for another. Runs entirely in your browser, so your data never leaves your device.
0 chars · 0 lines
Output
The result appears here as you type.
How to use Replace Integer Digits
- 1. Paste your integers. Enter the integers you want edited, in any spacing you already have, so every digit inside every number is checked.
- 2. Set the digit to find. Enter Find digit to specify which single digit, such as 2, you want targeted across all of the integers.
- 3. Set the replacement digit. Enter Replace with to specify the digit that takes its place, such as 9, everywhere the found digit occurs.
- 4. Copy the updated integers. Copy the resulting list, where every occurrence of the found digit has been swapped for the replacement while the rest of each number stays unchanged.
When to use Replace Integer Digits
Replace Integer Digits swaps one specific digit for another wherever it appears inside a list of integers, operating at the digit level rather than the whole-number level. Use it when a particular digit needs a global correction across many numbers at once.
- Fixing a systematic OCR misread. A scanner consistently misreads a particular digit, like 2, as another one across a batch of numbers, and you need to correct every occurrence at once.
- Applying a digit-substitution rule. You are building a simple cipher or code scheme that replaces one digit with another consistently, and want to apply the rule across a batch of numbers quickly.
- Correcting a repeated formatting mistake. A data export accidentally used the digit 0 where it should have used 8 due to a font or encoding issue, and every instance needs correcting.
- Testing a digit-replacement function. You wrote code that swaps digits within numbers and want a trusted reference output for several test integers to compare against your implementation.
Examples
Replace 2 with 9
Input
2022
Output
9099
Works line by line and keeps the sign
Input
-101 505
Output
-909 505
About the Replace Integer Digits tool
Replace Integer Digits does its work locally, right in the browser. Swap every occurrence of one digit for another. There is no upload step, no queue and no account, and your data never travels over the network.
It belongs to the Integer Tools collection on EditSafely, a set of 133 small, focused Integer utilities that share the same instant, private workspace.
You can shape the output with 2 settings, including Find digit and Replace with, and the result refreshes the moment you change one. 2 worked examples further down the page show exactly what the tool produces for real inputs.
Running locally also makes the tool fast and dependable: results appear as you type or drop a file, there is no server outage that can take it down mid-task, and confidential data can be processed without a second thought.
Frequently asked questions
Is Replace Integer Digits free to use?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Is it safe to paste sensitive or confidential data?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
How much text can I process at once?
There is no fixed limit. Because the work happens on your own device rather than on a shared server, the practical ceiling is your machine's memory, which comfortably handles inputs far larger than typical online tools allow.
Do I need to sign up or install anything?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.