---
title: toString() function
description: toString() converts all values in the _value column to string types.
url: https://docs.influxdata.com/flux/v0/stdlib/universe/tostring/
estimated_tokens: 797
product: Flux
version: v0
publisher: InfluxData
canonical: https://docs.influxdata.com/flux/v0/stdlib/universe/tostring/
date: '2024-04-08T16:01:02-06:00'
lastmod: '2024-04-08T16:01:02-06:00'
---

* Flux 0.7.0+

InfluxDB support

`toString()` converts all values in the `_value` column to string types.

##### Function type signature

```js
(<-tables: stream[{A with _value: B}]) => stream[{A with _value: B, _value: string}]
```

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

## Parameters

### tables

Input data. Default is piped-forward data (`<-`).

## Examples

### Convert the \_value column to strings

```js
import "sampledata"

sampledata.float()
    |> toString()
```

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

View example input and output

#### Input data

|       \_time       |\*tag|\_value|
|--------------------|-----|-------|
|2021-01-01T00:00:00Z| t1  |\-2.18 |
|2021-01-01T00:00:10Z| t1  | 10.92 |
|2021-01-01T00:00:20Z| t1  | 7.35  |
|2021-01-01T00:00:30Z| t1  | 17.53 |
|2021-01-01T00:00:40Z| t1  | 15.23 |
|2021-01-01T00:00:50Z| t1  | 4.43  |

|       \_time       |\*tag|\_value|
|--------------------|-----|-------|
|2021-01-01T00:00:00Z| t2  | 19.85 |
|2021-01-01T00:00:10Z| t2  | 4.97  |
|2021-01-01T00:00:20Z| t2  |\-3.75 |
|2021-01-01T00:00:30Z| t2  | 19.77 |
|2021-01-01T00:00:40Z| t2  | 13.86 |
|2021-01-01T00:00:50Z| t2  | 1.86  |

#### Output data

|       \_time       |\_value|\*tag|
|--------------------|-------|-----|
|2021-01-01T00:00:00Z|\-2.18 | t1  |
|2021-01-01T00:00:10Z| 10.92 | t1  |
|2021-01-01T00:00:20Z| 7.35  | t1  |
|2021-01-01T00:00:30Z| 17.53 | t1  |
|2021-01-01T00:00:40Z| 15.23 | t1  |
|2021-01-01T00:00:50Z| 4.43  | t1  |

|       \_time       |\_value|\*tag|
|--------------------|-------|-----|
|2021-01-01T00:00:00Z| 19.85 | t2  |
|2021-01-01T00:00:10Z| 4.97  | t2  |
|2021-01-01T00:00:20Z|\-3.75 | t2  |
|2021-01-01T00:00:30Z| 19.77 | t2  |
|2021-01-01T00:00:40Z| 13.86 | t2  |
|2021-01-01T00:00:50Z| 1.86  | t2  |

#### Related

* [Work with strings](/flux/v0/data-types/basic/string/)

[transformations](/flux/v0/tags/transformations/)[type-conversions](/flux/v0/tags/type-conversions/)
| _time | *tag | _value |
| --- | --- | --- |
| _time | *tag | _value |
| 2021-01-01T00:00:00Z | t1 | -2.18 |
| 2021-01-01T00:00:10Z | t1 | 10.92 |
| 2021-01-01T00:00:20Z | t1 | 7.35 |
| 2021-01-01T00:00:30Z | t1 | 17.53 |
| 2021-01-01T00:00:40Z | t1 | 15.23 |
| 2021-01-01T00:00:50Z | t1 | 4.43 |

| _time | *tag | _value |
| --- | --- | --- |
| _time | *tag | _value |
| 2021-01-01T00:00:00Z | t2 | 19.85 |
| 2021-01-01T00:00:10Z | t2 | 4.97 |
| 2021-01-01T00:00:20Z | t2 | -3.75 |
| 2021-01-01T00:00:30Z | t2 | 19.77 |
| 2021-01-01T00:00:40Z | t2 | 13.86 |
| 2021-01-01T00:00:50Z | t2 | 1.86 |

| _time | _value | *tag |
| --- | --- | --- |
| _time | _value | *tag |
| 2021-01-01T00:00:00Z | -2.18 | t1 |
| 2021-01-01T00:00:10Z | 10.92 | t1 |
| 2021-01-01T00:00:20Z | 7.35 | t1 |
| 2021-01-01T00:00:30Z | 17.53 | t1 |
| 2021-01-01T00:00:40Z | 15.23 | t1 |
| 2021-01-01T00:00:50Z | 4.43 | t1 |

| _time | _value | *tag |
| --- | --- | --- |
| _time | _value | *tag |
| 2021-01-01T00:00:00Z | 19.85 | t2 |
| 2021-01-01T00:00:10Z | 4.97 | t2 |
| 2021-01-01T00:00:20Z | -3.75 | t2 |
| 2021-01-01T00:00:30Z | 19.77 | t2 |
| 2021-01-01T00:00:40Z | 13.86 | t2 |
| 2021-01-01T00:00:50Z | 1.86 | t2 |