mathjs/docs/reference/functions/size.md

Math.js is an extensive math library for JavaScript and Node.js. It features a flexible expression parser with support for symbolic computation, comes with a large set of built-in functions and constants, and offers an integrated solution to work with dif

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# Function size

Calculate the size of a matrix or scalar.


## Syntax

```js
math.size(x)
```

### Parameters

Parameter | Type | Description
--------- | ---- | -----------
`x` | boolean &#124; number &#124; Complex &#124; Unit &#124; string &#124; Array &#124; Matrix | A matrix

### Returns

Type | Description
---- | -----------
Array &#124; Matrix | A vector with size of `x`.


## Examples

```js
math.size(2.3)                  // returns []
math.size('hello world')        // returns [11]

const A = [[1, 2, 3], [4, 5, 6]]
math.size(A)                    // returns [2, 3]
math.size(math.range(1,6))      // returns [5]
```


## See also

[count](count.md),
[resize](resize.md),
[squeeze](squeeze.md),
[subset](subset.md)