---
title: time() function
description: >
  `time()` converts a value to a time type.
menu:
  flux_v0_ref:
    name: time
    parent: universe
    identifier: universe/time
weight: 101
flux/v0/tags: [type-conversions]
introduced: 0.7.0
---

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`time()` converts a value to a time type.



##### Function type signature

```js
(v: A) => time
```

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

## Parameters

### v
({{< req >}})
Value to convert.

Strings must be valid [RFC3339 timestamps](/influxdb/cloud/reference/glossary/#rfc3339-timestamp).
Integer and unsigned integer values are parsed as nanosecond epoch timestamps.


## Examples

- [Convert a string to a time value](#convert-a-string-to-a-time-value)
- [Convert an integer to a time value](#convert-an-integer-to-a-time-value)
- [Convert all values in a column to time](#convert-all-values-in-a-column-to-time)

### Convert a string to a time value

```js
time(v: "2021-01-01T00:00:00Z")// Returns 2021-01-01T00:00:00Z (time)


```


### Convert an integer to a time value

```js
time(v: 1640995200000000000)// Returns 2022-01-01T00:00:00Z


```


### Convert all values in a column to time

If converting the `_value` column to time types, use `toTime()`.
If converting columns other than `_value`, use `map()` to iterate over each
row and `time()` to convert a column value to a time type.

```js
data
    |> map(fn: (r) => ({r with exampleCol: time(v: r.exampleCol)}))

```

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

#### Input data

| _time                | _value  | *tag | exampleCol  |
| -------------------- | ------- | ---- | ----------- |
| 2021-01-01T00:00:00Z | -2      | t1   | -2000000000 |
| 2021-01-01T00:00:10Z | 10      | t1   | 10000000000 |
| 2021-01-01T00:00:20Z | 7       | t1   | 7000000000  |
| 2021-01-01T00:00:30Z | 17      | t1   | 17000000000 |
| 2021-01-01T00:00:40Z | 15      | t1   | 15000000000 |
| 2021-01-01T00:00:50Z | 4       | t1   | 4000000000  |

| _time                | _value  | *tag | exampleCol  |
| -------------------- | ------- | ---- | ----------- |
| 2021-01-01T00:00:00Z | 19      | t2   | 19000000000 |
| 2021-01-01T00:00:10Z | 4       | t2   | 4000000000  |
| 2021-01-01T00:00:20Z | -3      | t2   | -3000000000 |
| 2021-01-01T00:00:30Z | 19      | t2   | 19000000000 |
| 2021-01-01T00:00:40Z | 13      | t2   | 13000000000 |
| 2021-01-01T00:00:50Z | 1       | t2   | 1000000000  |


#### Output data

| _time                | _value  | exampleCol           | *tag |
| -------------------- | ------- | -------------------- | ---- |
| 2021-01-01T00:00:00Z | -2      | 1969-12-31T23:59:58Z | t1   |
| 2021-01-01T00:00:10Z | 10      | 1970-01-01T00:00:10Z | t1   |
| 2021-01-01T00:00:20Z | 7       | 1970-01-01T00:00:07Z | t1   |
| 2021-01-01T00:00:30Z | 17      | 1970-01-01T00:00:17Z | t1   |
| 2021-01-01T00:00:40Z | 15      | 1970-01-01T00:00:15Z | t1   |
| 2021-01-01T00:00:50Z | 4       | 1970-01-01T00:00:04Z | t1   |

| _time                | _value  | exampleCol           | *tag |
| -------------------- | ------- | -------------------- | ---- |
| 2021-01-01T00:00:00Z | 19      | 1970-01-01T00:00:19Z | t2   |
| 2021-01-01T00:00:10Z | 4       | 1970-01-01T00:00:04Z | t2   |
| 2021-01-01T00:00:20Z | -3      | 1969-12-31T23:59:57Z | t2   |
| 2021-01-01T00:00:30Z | 19      | 1970-01-01T00:00:19Z | t2   |
| 2021-01-01T00:00:40Z | 13      | 1970-01-01T00:00:13Z | t2   |
| 2021-01-01T00:00:50Z | 1       | 1970-01-01T00:00:01Z | t2   |

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