Increment Integers
Increase all integers by a certain amount. 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 Increment Integers
- 1. Paste your integers. Enter the list of integers you want to adjust, one per line or separated by another consistent delimiter.
- 2. Set the increase amount. Enter Increase by to control how much every integer in the list goes up, such as 1 for a simple bump or a negative number to effectively decrease instead.
- 3. Copy the incremented list. Copy the resulting list, where every original integer has had the same amount added to it, preserving order.
When to use Increment Integers
Increment Integers adds a fixed amount to every number in a list at once, instead of editing each value individually. Reach for Increment Integers whenever a whole column of numbers needs the same offset applied, such as shifting a date range or reindexing IDs.
- Shifting a set of database IDs. You are merging two datasets and need to offset one table's IDs by a fixed amount to avoid collisions with the other table's existing keys.
- Adjusting a scoring system. A game's scoring rules changed and every existing score needs a flat bonus applied retroactively. Increment the full list by the bonus amount in one step.
- Converting a zero-indexed list to one-indexed. A dataset uses zero-based indices but the destination system expects one-based numbering. Increment every value by 1 before importing.
- Testing an off-by-one edge case. You are debugging a loop boundary and want to see how a list of test values behaves when shifted up by exactly one, to compare against expected results.
Examples
Add one to each integer
Input
5 -3 99
Output
6 -2 100
Add a custom amount
Input
10
Output
15
About the Increment Integers tool
Increment Integers does its work locally, right in the browser. Increase all integers by a certain amount. 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 the Increase by setting, and the result refreshes the moment you change it. 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
Does Increment Integers cost anything?
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?
No data leaves your device. The whole tool is JavaScript that runs inside your browser tab, so there is no upload, no server-side processing and no log of what you did. If you disconnect from the internet after the page loads, it keeps working.
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?
Nothing to install and no account needed. Open the page in any up-to-date browser, including on a phone or tablet, and the tool is ready.
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.