---
title: toUInt() function
description: toUInt() converts all values in the _value column to unsigned integer types.
url: https://docs.influxdata.com/flux/v0/stdlib/universe/touint/
estimated_tokens: 3060
product: Flux
version: v0
---

# toUInt() function

-   Flux 0.7.0+
-   View InfluxDB support

`toUInt()` converts all values in the `_value` column to unsigned integer types.

#### Supported types and behaviors

`toUInt()` behavior depends on the `_value` column type:

| _value type | Returned value |
| --- | --- |
| string | UInteger equivalent of the numeric string |
| bool | 1 (true) or 0 (false) |
| duration | Number of nanoseconds in the specified duration |
| time | Equivalent nanosecond epoch timestamp |
| float | Value truncated at the decimal |
| int | UInteger equivalent of the integer |

##### Function type signature

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

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

## Parameters

### tables

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

## Examples

-   [Convert a float \_value column to uintegers](#convert-a-float-_value-column-to-uintegers)
-   [Convert a boolean \_value column to uintegers](#convert-a-boolean-_value-column-to-uintegers)
-   [Convert a uinteger \_value column to an uintegers](#convert-a-uinteger-_value-column-to-an-uintegers)

### Convert a float \_value column to uintegers

```js
import "sampledata"

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

[](#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 | 18446744073709551614 | t1 |
| 2021-01-01T00:00:10Z | 10 | t1 |
| 2021-01-01T00:00:20Z | 7 | t1 |
| 2021-01-01T00:00:30Z | 17 | t1 |
| 2021-01-01T00:00:40Z | 15 | t1 |
| 2021-01-01T00:00:50Z | 4 | t1 |

| _time | _value | *tag |
| --- | --- | --- |
| 2021-01-01T00:00:00Z | 19 | t2 |
| 2021-01-01T00:00:10Z | 4 | t2 |
| 2021-01-01T00:00:20Z | 18446744073709551613 | t2 |
| 2021-01-01T00:00:30Z | 19 | t2 |
| 2021-01-01T00:00:40Z | 13 | t2 |
| 2021-01-01T00:00:50Z | 1 | t2 |

### Convert a boolean \_value column to uintegers

```js
import "sampledata"

sampledata.bool()
    |> toUInt()
```

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

View example input and output

#### Input data

| _time | *tag | _value |
| --- | --- | --- |
| 2021-01-01T00:00:00Z | t1 | true |
| 2021-01-01T00:00:10Z | t1 | true |
| 2021-01-01T00:00:20Z | t1 | false |
| 2021-01-01T00:00:30Z | t1 | true |
| 2021-01-01T00:00:40Z | t1 | false |
| 2021-01-01T00:00:50Z | t1 | false |

| _time | *tag | _value |
| --- | --- | --- |
| 2021-01-01T00:00:00Z | t2 | false |
| 2021-01-01T00:00:10Z | t2 | true |
| 2021-01-01T00:00:20Z | t2 | false |
| 2021-01-01T00:00:30Z | t2 | true |
| 2021-01-01T00:00:40Z | t2 | true |
| 2021-01-01T00:00:50Z | t2 | false |

#### Output data

| _time | _value | *tag |
| --- | --- | --- |
| 2021-01-01T00:00:00Z | 1 | t1 |
| 2021-01-01T00:00:10Z | 1 | t1 |
| 2021-01-01T00:00:20Z | 0 | t1 |
| 2021-01-01T00:00:30Z | 1 | t1 |
| 2021-01-01T00:00:40Z | 0 | t1 |
| 2021-01-01T00:00:50Z | 0 | t1 |

| _time | _value | *tag |
| --- | --- | --- |
| 2021-01-01T00:00:00Z | 0 | t2 |
| 2021-01-01T00:00:10Z | 1 | t2 |
| 2021-01-01T00:00:20Z | 0 | t2 |
| 2021-01-01T00:00:30Z | 1 | t2 |
| 2021-01-01T00:00:40Z | 1 | t2 |
| 2021-01-01T00:00:50Z | 0 | t2 |

### Convert a uinteger \_value column to an uintegers

```js
import "sampledata"

sampledata.uint()
    |> toUInt()
```

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

View example input and output

#### Input data

| _time | _value | *tag |
| --- | --- | --- |
| 2021-01-01T00:00:00Z | 18446744073709551614 | t1 |
| 2021-01-01T00:00:10Z | 10 | t1 |
| 2021-01-01T00:00:20Z | 7 | t1 |
| 2021-01-01T00:00:30Z | 17 | t1 |
| 2021-01-01T00:00:40Z | 15 | t1 |
| 2021-01-01T00:00:50Z | 4 | t1 |

| _time | _value | *tag |
| --- | --- | --- |
| 2021-01-01T00:00:00Z | 19 | t2 |
| 2021-01-01T00:00:10Z | 4 | t2 |
| 2021-01-01T00:00:20Z | 18446744073709551613 | t2 |
| 2021-01-01T00:00:30Z | 19 | t2 |
| 2021-01-01T00:00:40Z | 13 | t2 |
| 2021-01-01T00:00:50Z | 1 | t2 |

#### Output data

| _time | _value | *tag |
| --- | --- | --- |
| 2021-01-01T00:00:00Z | 18446744073709551614 | t1 |
| 2021-01-01T00:00:10Z | 10 | t1 |
| 2021-01-01T00:00:20Z | 7 | t1 |
| 2021-01-01T00:00:30Z | 17 | t1 |
| 2021-01-01T00:00:40Z | 15 | t1 |
| 2021-01-01T00:00:50Z | 4 | t1 |

| _time | _value | *tag |
| --- | --- | --- |
| 2021-01-01T00:00:00Z | 19 | t2 |
| 2021-01-01T00:00:10Z | 4 | t2 |
| 2021-01-01T00:00:20Z | 18446744073709551613 | t2 |
| 2021-01-01T00:00:30Z | 19 | t2 |
| 2021-01-01T00:00:40Z | 13 | t2 |
| 2021-01-01T00:00:50Z | 1 | t2 |

#### Related

-   [Work with unsigned integers](/flux/v0/data-types/basic/uint/)
-   [uint() function](/flux/v0/stdlib/universe/uint/)

[transformations](/flux/v0/tags/transformations/) [type-conversions](/flux/v0/tags/type-conversions/)