# Convert timestamp to epoctime with milisecond
**URL:** https://discuss.elastic.co/t/convert-timestamp-to-epoctime-with-milisecond/126899
**Category:** Logstash
**Created:** [April 5, 2018, 10:52am UTC](https://discuss.elastic.co/t/convert-timestamp-to-epoctime-with-milisecond/126899 "2018-04-05T10:52:15Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Masahiro\_Shimizu](https://discuss.elastic.co/u/Masahiro_Shimizu)
#### Post date: [April 5, 2018, 10:52am UTC](https://discuss.elastic.co/t/convert-timestamp-to-epoctime-with-milisecond/126899/1 "2018-04-05T10:52:15Z")
Hi , this is my first question.
I would like convert @timestamp to epoch-time with millisecond
Because I want millisecond not second , I try check the latency through the messaging queue.
Here is my code,
* * *
ruby {
code =\> "event.set('epoc', event.get('@timestamp').to\_i)"
}
* * *
Is there the other method ? ( to\_i method convert to second)
---
### Author:  [@Jenni](https://discuss.elastic.co/u/Jenni)
#### Post date: [April 5, 2018, 11:07am UTC](https://discuss.elastic.co/t/convert-timestamp-to-epoctime-with-milisecond/126899/2 "2018-04-05T11:07:00Z")
You could convert to float, multiply by 1000 and convert the result to int. (But maybe there is a more elegant way.)
```
ruby {
code => "event.set('epoc', (event.get('@timestamp').to_f*1000).to_i)"
}
```
---
### Author:  [@Masahiro\_Shimizu](https://discuss.elastic.co/u/Masahiro_Shimizu)
#### Post date: [April 6, 2018, 3:03am UTC](https://discuss.elastic.co/t/convert-timestamp-to-epoctime-with-milisecond/126899/3 "2018-04-06T03:03:18Z")
Thank you quick response. Jenni.
I didn't know to\_f method.
Though I try it , millisecond part is all zero (like below)
```
a)my old code (to_i method)
- code
code => "event.set('epoc', event.get('@timestamp').to_i)"
- output
"epoc" => 1522983522,
b)new code (you suggested)
- code
code => "event.set('epoc', (event.get('@timestamp').to_f * 1000).to_i)"
- output
"epoc" => 1522983522000,
```
I want accurate value of milli second ( "000" of 21522983522000").
Could you have more idea ?
---
### Author:  [@Jenni](https://discuss.elastic.co/u/Jenni)
#### Post date: [April 6, 2018, 8:07am UTC](https://discuss.elastic.co/t/convert-timestamp-to-epoctime-with-milisecond/126899/4 "2018-04-06T08:07:37Z")
Mh. That's strange. I had tried that before posting and it seemed to work for me:
"@timestamp" =\> 2018-04-06T07:59:21.130Z,
"epoc" =\> 1523001561130
"@timestamp" =\> 2018-04-06T08:01:36.846Z,
"epoc" =\> 1523001696846
Is there a chance that you are losing that level of precision one step earlier when you are creating the timestamp? What does the original timestamp look like in the rubydebug output?
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [May 4, 2018, 8:07am UTC](https://discuss.elastic.co/t/convert-timestamp-to-epoctime-with-milisecond/126899/5 "2018-05-04T08:07:37Z")
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