Join Vectors
Concatenate vectors. Runs entirely in your browser, so your data never leaves your device.
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Output
The result appears here as you type.
How to use Join Vectors
- 1. Paste the vectors to join. Enter each vector on its own line, for example (1, 2) and (3, 4, 5). Vectors of different lengths are fine since concatenation just appends components in order.
- 2. Read the concatenated result. Every component from every input vector is combined into one longer vector, in the same order the lines appeared, with no reordering or deduplication applied.
- 3. Copy the joined vector. The combined vector appears in the output pane. Copy it into your document, spreadsheet, or code wherever the merged data is needed.
When to use Join Vectors
Join Vectors concatenates two or more vectors end to end into a single longer vector. It has no options because the operation is unambiguous: components stay in input order with nothing else to configure.
- Combining feature vectors for a model. You have separate feature vectors from different data sources, like a text embedding and a set of numeric metadata fields, and need to concatenate them into one combined input vector for a model.
- Merging partial coordinate lists. A CAD or CAM export split a path into segments and you need to concatenate the coordinate vectors back into one continuous list before importing it elsewhere.
- Assembling a homework answer. A linear algebra assignment asks you to concatenate two given vectors as a warm-up step before a bigger calculation, and you want to double-check the joined result before moving on.
- Preparing input for a custom script. You are testing a script that expects one flat array of numbers but your source data arrives as several shorter vectors, so joining them here saves writing a throwaway concatenation snippet.
Examples
Concatenate vectors of different sizes
Input
(1, 2) (3, 4, 5)
Output
(1, 2, 3, 4, 5)
About the Join Vectors tool
Join Vectors runs as plain JavaScript in your browser tab, with no server behind it. Concatenate vectors. Whatever you put in stays on your device from start to finish.
The tool is part of EditSafely's Math Tools section, 234 single-purpose utilities built around the same idea: open the page, get the result, keep your data to yourself.
There is nothing to configure. Provide the input and the result appears on its own. A worked example further down the page shows exactly what the tool produces for a real input.
That local-first design has practical benefits beyond privacy. The tool keeps working on a flaky connection once the page has loaded, results are instant because nothing round-trips to a server, and it is safe to use with confidential material.
Frequently asked questions
Does Join Vectors 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.