# How to convert timestamp in logstash

**URL:** <https://discuss.elastic.co/t/how-to-convert-timestamp-in-logstash/89350>\
**Category:** Logstash\
**Created:** [June 14, 2017, 9:38am UTC](https://discuss.elastic.co/t/how-to-convert-timestamp-in-logstash/89350 "2017-06-14T09:38:36Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![viki](https://avatars.discourse-cdn.com/v4/letter/v/8baadc/32.png) [@viki](https://discuss.elastic.co/u/viki)\
**Post date:** [June 14, 2017, 9:38am UTC](https://discuss.elastic.co/t/how-to-convert-timestamp-in-logstash/89350/1 "2017-06-14T09:38:36Z")

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Hi,

I'm new for logstash. I have a "time" field which has a value "2017-06-13 08:08:18,647" . I need convert "time" field value as "2017-06-13 08:08:18"

Thanks in Advance

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**Author:** ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)\
**Post date:** [June 14, 2017, 12:32pm UTC](https://discuss.elastic.co/t/how-to-convert-timestamp-in-logstash/89350/2 "2017-06-14T12:32:01Z")

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You can use a mutate filter's gsub option to remove the last three digits from the string.

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<div class="post-metadata">

**Author:** ![viki](https://avatars.discourse-cdn.com/v4/letter/v/8baadc/32.png) [@viki](https://discuss.elastic.co/u/viki)\
**Post date:** [June 15, 2017, 4:28am UTC](https://discuss.elastic.co/t/how-to-convert-timestamp-in-logstash/89350/3 "2017-06-15T04:28:23Z")

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Thanks..!

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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:** [July 13, 2017, 4:28am UTC](https://discuss.elastic.co/t/how-to-convert-timestamp-in-logstash/89350/4 "2017-07-13T04:28:48Z")

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