---
title: math.hypot() function
description: >
  `math.hypot()` returns the square root of `p*p + q*q`, taking care to avoid overflow
  and underflow.
menu:
  flux_v0_ref:
    name: math.hypot
    parent: math
    identifier: math/hypot
weight: 101
---

<!------------------------------------------------------------------------------

IMPORTANT: This page was generated from comments in the Flux source code. Any
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`math.hypot()` returns the square root of `p*p + q*q`, taking care to avoid overflow
and underflow.



##### Function type signature

```js
(p: float, q: float) => float
```

{{% caption %}}
For more information, see [Function type signatures](/flux/v0/function-type-signatures/).
{{% /caption %}}

## Parameters

### p
({{< req >}})
p-value to use in the operation.



### q
({{< req >}})
q-value to use in the operation.




## Examples

- [Return the hypotenuse of two values](#return-the-hypotenuse-of-two-values)
- [Use math.hypot in map](#use-mathhypot-in-map)

### Return the hypotenuse of two values

```js
import "math"

math.hypot(p: 2.0, q: 5.0)// 5.385164807134505


```


### Use math.hypot in map

```js
import "math"

data
    |> map(fn: (r) => ({r with _value: math.hypot(p: r.a, q: r.b)}))

```

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{{% expand "View example input and output" %}}

#### Input data

| triangle  | a     | b    |
| --------- | ----- | ---- |
| t1        | 12.3  | 11.7 |
| t2        | 109.6 | 23.3 |
| t3        | 8.2   | 34.2 |
| t4        | 33.9  | 28   |
| t5        | 25    | 25   |


#### Output data

| _value             | a     | b    | triangle  |
| ------------------ | ----- | ---- | --------- |
| 16.975865220954127 | 12.3  | 11.7 | t1        |
| 112.04931949815669 | 109.6 | 23.3 | t2        |
| 35.16930479836074  | 8.2   | 34.2 | t3        |
| 43.9682840238279   | 33.9  | 28   | t4        |
| 35.35533905932738  | 25    | 25   | t5        |

{{% /expand %}}
{{< /expand-wrapper >}}