Repeat a Number
Repeat a number multiple times. 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 Repeat a Number
- 1. Paste your numbers. Enter one number per line into the input pane, each one you want repeated a set number of times.
- 2. Set the repeat count and separator. Enter Repeat count to control how many times each number is repeated, and set Separator to control the character placed between the repeated copies.
- 3. Read the result. Each input line is expanded into its own repeated group, so 5 with a repeat count of 3 becomes 5 5 5 while other lines are processed the same way independently.
- 4. Copy the results. Copy the repeated numbers into a test fixture, padding routine or data generation script.
When to use Repeat a Number
Repeat a Number duplicates each number in a list a set number of times with a separator you choose, useful for padding or expanding numeric data. Use this tool whenever you need each value repeated a fixed number of times rather than generating new values.
- Padding a test array with repeated values. A unit test needs an array of ten identical values to check how a function handles duplicate entries, so repeating a single number ten times builds the array quickly.
- Creating a simple rhythm or pattern sequence. A generative music sketch wants a repeated beat value expanded into a longer sequence, so repeating each number in a short pattern extends it to the needed length.
- Building a stress test with duplicate IDs. A database deduplication feature needs test data containing the same ID repeated multiple times to confirm the deduplication logic correctly collapses the duplicates.
Examples
Repeat each number three times
Input
5 12
Output
5 5 5 12 12 12
Custom separator
Input
7
Output
7-7
About the Repeat a Number tool
Repeat a Number does its work locally, right in the browser. Repeat a number multiple times. There is no upload step, no queue and no account, and your data never travels over the network.
It belongs to the Number Tools collection on EditSafely, a set of 194 small, focused Number utilities that share the same instant, private workspace.
You can shape the output with 2 settings, including Repeat count and Separator, 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
Does Repeat a Number 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.