# Trying to calculate time difference using scripted fields

**URL:** https://discuss.elastic.co/t/trying-to-calculate-time-difference-using-scripted-fields/197674
**Category:** Kibana
**Created:** [September 2, 2019, 11:01am UTC](https://discuss.elastic.co/t/trying-to-calculate-time-difference-using-scripted-fields/197674 "2019-09-02T11:01:44Z")
**Posts on this page:** 7
**Page:** 1

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### Author: ![Vikash\_Singh1](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/vikash_singh1/32/42119_2.png) [@Vikash\_Singh1](https://discuss.elastic.co/u/Vikash_Singh1)
#### Post date: [September 2, 2019, 11:01am UTC](https://discuss.elastic.co/t/trying-to-calculate-time-difference-using-scripted-fields/197674/1 "2019-09-02T11:01:44Z")

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Hi i am trying to calculate time difference between two fields:  
netflow.first\_switched Sep 2, 2019 @ 16:25:51.000  
netflow.last\_switched Sep 2, 2019 @ 16:25:52.182  
I am using:  
doc['netflow.last\_switched'].value-doc['netflow.first\_switched'].value  
but I am not getting any value while previewing result.  
Specifications are as follows:  
Type:Date  
Format:Date

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### Author: ![matw](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/matw/32/13913_2.png) [@matw](https://discuss.elastic.co/u/matw)
#### Post date: [September 3, 2019, 8:42am UTC](https://discuss.elastic.co/t/trying-to-calculate-time-difference-using-scripted-fields/197674/2 "2019-09-03T08:42:02Z")

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Hi Vikash

There are good examples in the painless documentation how to solve this:  
[https://www.elastic.co/guide/en/elasticsearch/painless/current/painless-datetime.html#\_datetime\_difference\_elapsed\_time](https://www.elastic.co/guide/en/elasticsearch/painless/current/painless-datetime.html#_datetime_difference_elapsed_time)  
Did you have a look?  
If it doesn't work, maybe you could paste a sample Elasticsearch document here, so I could try it out. the dates you've pasted look formatted.

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<div class="post-metadata">

### Author: ![Vikash\_Singh1](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/vikash_singh1/32/42119_2.png) [@Vikash\_Singh1](https://discuss.elastic.co/u/Vikash_Singh1)
#### Post date: [September 3, 2019, 8:51am UTC](https://discuss.elastic.co/t/trying-to-calculate-time-difference-using-scripted-fields/197674/3 "2019-09-03T08:51:14Z")

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@matw I have tried the document still didn't got any results. I will paste the output from my index  
 ![Screenshot_2019-09-03%20Discover%20-%20Kibana](https://us1.discourse-cdn.com/elastic/original/3X/e/b/eb63b463d4430ad29abb62d9f2710df978685b2e.png)  
whenever I am testing the output I ain't getting any results...

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<div class="post-metadata">

### Author: ![Vikash\_Singh1](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/vikash_singh1/32/42119_2.png) [@Vikash\_Singh1](https://discuss.elastic.co/u/Vikash_Singh1)
#### Post date: [September 3, 2019, 8:53am UTC](https://discuss.elastic.co/t/trying-to-calculate-time-difference-using-scripted-fields/197674/4 "2019-09-03T08:53:38Z")

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When I am running  
def time = doc['netflow.last\_switched'].value;  
return time;  
I am getting output as:

 ![Screenshot_2019-09-03%20New%20Scripted%20Field%20-%20netflow-%20-%20Kibana](https://us1.discourse-cdn.com/elastic/original/3X/d/4/d4b714f1fc190cf7499becc9031313b943ad431f.png)

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<div class="post-metadata">

### Author: ![matw](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/matw/32/13913_2.png) [@matw](https://discuss.elastic.co/u/matw)
#### Post date: [September 4, 2019, 8:08am UTC](https://discuss.elastic.co/t/trying-to-calculate-time-difference-using-scripted-fields/197674/5 "2019-09-04T08:08:29Z")

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please try the following

`doc['netflow.last_switched'].value.millis - doc['netflow.first_switched'].value.millis`

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<div class="post-metadata">

### Author: ![Vikash\_Singh1](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/vikash_singh1/32/42119_2.png) [@Vikash\_Singh1](https://discuss.elastic.co/u/Vikash_Singh1)
#### Post date: [September 4, 2019, 10:57am UTC](https://discuss.elastic.co/t/trying-to-calculate-time-difference-using-scripted-fields/197674/6 "2019-09-04T10:57:00Z")

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Thanks @matw

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### Author: ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)
#### Post date: [October 2, 2019, 10:57am UTC](https://discuss.elastic.co/t/trying-to-calculate-time-difference-using-scripted-fields/197674/7 "2019-10-02T10:57:06Z")

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