Multiply Vector by Constant
Scalar multiplication. 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 Multiply Vector by Constant
- 1. Paste your vectors. Enter one vector per line, for example (1, 2, 3). Each is scaled independently, so vectors of different lengths can be listed together.
- 2. Set the constant. Choose Constant, the number every component of every vector gets multiplied by. A value between 0 and 1 shrinks the vector, above 1 enlarges it, and negative flips its direction.
- 3. Copy the scaled vectors. The output pane shows each vector scaled by your constant, one per line in the same order. Copy it into your document, spreadsheet, or further calculation.
When to use Multiply Vector by Constant
Multiply Vector by Constant scales every component of one or more vectors by the same number, also called scalar multiplication. Use it whenever a batch of vectors needs uniform resizing without touching each value by hand.
- Scaling velocity vectors in a physics problem. A homework problem asks you to double the speed of several velocity vectors while keeping direction fixed, and scaling each by a constant of 2 does exactly that in one pass.
- Resizing displacement vectors for a diagram. You are drawing a force or displacement diagram and need every vector scaled down by the same factor to fit the arrows on a page without changing their relative proportions.
- Normalizing a batch before further processing. You have a list of vectors that all need a consistent unit conversion factor applied, like converting from meters to feet, and multiplying by the constant handles the whole list at once.
- Testing a scalar multiplication function. You are validating a vector math library's scalar multiply function and want known-correct scaled output for several test vectors to compare against your implementation's results.
Examples
Scale each vector by 2 (one per line)
Input
(1, 2, 3) (4, 5, 6)
Output
(2, 4, 6) (8, 10, 12)
About the Multiply Vector by Constant tool
Multiply Vector by Constant does its work locally, right in the browser. Scalar multiplication. There is no upload step, no queue and no account, and your data never travels over the network.
It belongs to the Math Tools collection on EditSafely, a set of 234 small, focused Math utilities that share the same instant, private workspace.
You can shape the output with the Constant setting, and the result refreshes the moment you change it. A worked example further down the page shows exactly what the tool produces for a real input.
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 Multiply Vector by Constant 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.