# How to convert string type to timestamp **URL:** \ **Category:** Logstash\ **Created:** [September 18, 2018, 8:09am UTC](https://discuss.elastic.co/t/how-to-convert-string-type-to-timestamp/148936 "2018-09-18T08:09:51Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![shwesinhan](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/shwesinhan/32/78663_2.png) [@shwesinhan](https://discuss.elastic.co/u/shwesinhan)\ **Post date:** [September 18, 2018, 8:09am UTC](https://discuss.elastic.co/t/how-to-convert-string-type-to-timestamp/148936/1 "2018-09-18T08:09:51Z")
hi there i would like to convert string type to date timestamp i create log\_timestamp field and others below msg by using grok filter eg log\_timestamp : 2018-09-18 14:14:49,036, log\_level : WARN , log\_type: Test Request > 2018-09-18 14:14:49,036 (null) 32 WARN : V21.TestHelper : TestPage :: cde233w4qvqggy012l0gx4j3 :: Test Request : \\2.0\; : 30632979ms problem is that i would like to get date type for log\_timestamp field currently it's string type but i don't want to override default @timestamp plz point out to me about it thank you!!! ---
**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:** [September 18, 2018, 9:36am UTC](https://discuss.elastic.co/t/how-to-convert-string-type-to-timestamp/148936/2 "2018-09-18T09:36:02Z")
Use a date filter to convert the timestamp into a canonical ISO8601 timestamp that ES will automatically recognize as a timestamp. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [October 16, 2018, 9:36am UTC](https://discuss.elastic.co/t/how-to-convert-string-type-to-timestamp/148936/3 "2018-10-16T09:36:11Z")
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