---
title: math.hypot() function
description: math.hypot() returns the square root of p*p + q*q, taking care to avoid overflow and underflow.
url: https://docs.influxdata.com/flux/v0/stdlib/math/hypot/
estimated_tokens: 1160
product: Flux
version: v0
---

# math.hypot() function

-   Flux 0.22.0+
-   View InfluxDB support

`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
```

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

## Parameters

### p

(Required) p-value to use in the operation.

### q

(Required) 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)}))
```

[](#view-example-input-and-output)

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 |