# Convert string field in number using painless script in existing index kibana **URL:** \ **Category:** Kibana\ **Created:** [January 9, 2018, 10:45am UTC](https://discuss.elastic.co/t/convert-string-field-in-number-using-painless-script-in-existing-index-kibana/114685 "2018-01-09T10:45:05Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![kanchan](https://avatars.discourse-cdn.com/v4/letter/k/8797f3/32.png) [@kanchan](https://discuss.elastic.co/u/kanchan)\ **Post date:** [January 9, 2018, 10:45am UTC](https://discuss.elastic.co/t/convert-string-field-in-number-using-painless-script-in-existing-index-kibana/114685/1 "2018-01-09T10:45:05Z")
Hi Team,I have one index in which I have one string field that I want to convert in int type using painless script in kibana tool. How I can do it.Please let me know. ---
**Author:** ![thomasneirynck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/thomasneirynck/32/23313_2.png) [@thomasneirynck](https://discuss.elastic.co/u/thomasneirynck)\ **Post date:** [January 10, 2018, 12:33am UTC](https://discuss.elastic.co/t/convert-string-field-in-number-using-painless-script-in-existing-index-kibana/114685/2 "2018-01-10T00:33:07Z")
hi @kanchan, from the painless documentation, [https://www.elastic.co/guide/en/elasticsearch/painless/6.x/painless-api-reference.html#painless-api-reference-Integer](https://www.elastic.co/guide/en/elasticsearch/painless/6.x/painless-api-reference.html#painless-api-reference-Integer), it seems you can use `Integer.parseInt(...)`. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [February 7, 2018, 12:33am UTC](https://discuss.elastic.co/t/convert-string-field-in-number-using-painless-script-in-existing-index-kibana/114685/3 "2018-02-07T00:33:20Z")
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