# How to convert a field string to long in logstash

**URL:** <https://discuss.elastic.co/t/how-to-convert-a-field-string-to-long-in-logstash/49453>\
**Category:** Logstash\
**Created:** [May 7, 2016, 6:12am UTC](https://discuss.elastic.co/t/how-to-convert-a-field-string-to-long-in-logstash/49453 "2016-05-07T06:12:10Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![baneshbanna](https://avatars.discourse-cdn.com/v4/letter/b/5e9695/32.png) [@baneshbanna](https://discuss.elastic.co/u/baneshbanna)\
**Post date:** [May 7, 2016, 6:12am UTC](https://discuss.elastic.co/t/how-to-convert-a-field-string-to-long-in-logstash/49453/1 "2016-05-07T06:12:10Z")

</div>

HI,  
How to convert string field to long in logstash.

When i configured data type as long like below logstash not running.  
mutate {  
convert =\> { "clientid" =\> "long" }  
convert =\> { "groupid" =\> "long" }  
convert =\> { "teamid" =\> "long" }  
convert =\> { "userid" =\> "long" }  
convert =\> { "serviceid" =\> "long" }  
convert =\> { "eventid" =\> "long" }  
convert =\> { "pulsecount" =\> "long" }  
convert =\> { "statusid" =\> "long" }  
convert =\> { "ostype" =\> "long" }  
convert =\> { "dvpdropstate" =\> "long" }  
convert =\> { "dvpdropcode" =\> "long" }  
convert =\> { "creditsconsumed" =\> "long" }  
convert =\> { "callduration" =\> "long" }  
convert =\> { "voiceflowid" =\> "long" }   
}  
Thanks in advance.

---

<div class="post-metadata">

**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [May 7, 2016, 6:15am UTC](https://discuss.elastic.co/t/how-to-convert-a-field-string-to-long-in-logstash/49453/2 "2016-05-07T06:15:26Z")

</div>

> **[Mutate filter plugin | Logstash Reference \[8.11\] | Elastic](https://www.elastic.co/guide/en/logstash/current/plugins-filters-mutate.html#plugins-filters-mutate-convert)**

> Valid conversion targets are: integer, float, string, and boolean.

So it won't do float, you would need to map that in ES.

---

<div class="post-metadata">

**Author:** ![baneshbanna](https://avatars.discourse-cdn.com/v4/letter/b/5e9695/32.png) [@baneshbanna](https://discuss.elastic.co/u/baneshbanna)\
**Post date:** [May 7, 2016, 6:46am UTC](https://discuss.elastic.co/t/how-to-convert-a-field-string-to-long-in-logstash/49453/3 "2016-05-07T06:46:19Z")

</div>

Thank for the reply.Can you please share how to map in elasticsearch

---

<div class="post-metadata">

**Author:** ![fbaligand](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/fbaligand/32/5657_2.png) [@fbaligand](https://discuss.elastic.co/u/fbaligand)\
**Post date:** [May 7, 2016, 8:24am UTC](https://discuss.elastic.co/t/how-to-convert-a-field-string-to-long-in-logstash/49453/4 "2016-05-07T08:24:23Z")

</div>

For information, if you convert to "integer" in logstash, and then send the document to elasticsearch, elasticsearch will automatically use "long" mapping for this field.

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 6, 2017, 4:58am UTC](https://discuss.elastic.co/t/how-to-convert-a-field-string-to-long-in-logstash/49453/5 "2017-07-06T04:58:55Z")

</div>